Scholars@Duke
Erik Karl Paulson

Erik Karl Paulson

Chair, Department of Radiology
Radiology
erik.paulson@duke.edu
Box 3808 Med Ctr, Durham, NC 27710
40 Medicine Circle, Room 2560 Red Zone, Durham, NC 27710

Selected Publications

The Incidental Pancreatic Cyst: When to Worry About Cancer.

Journal Article Korean J Radiol · June 2024 Incidental pancreatic cystic lesions are a common challenge encountered by diagnostic radiologists. Specifically, given the prevalence of benign pancreatic cystic lesions, determining when to recommend aggressive actions such as surgical resection or endos ... Full text Link to item Cite

Diagnosis and Management of Acute Appendicitis in Adults: A Review.

Journal Article JAMA · December 2021 ImportanceAcute appendicitis is the most common abdominal surgical emergency in the world, with an annual incidence of 96.5 to 100 cases per 100 000 adults.ObservationsThe clinical diagnosis of acute appendicitis is based on history and p ... Full text Cite

The Need for Practical and Accurate Measures of Value for Radiology.

Journal Article J Am Coll Radiol · June 2019 Radiologists play a critical role in helping the health care system achieve greater value. Unfortunately, today radiology is often judged by simple "checkbox" metrics, which neither directly reflect the value radiologists provide nor the outcomes they help ... Full text Link to item Cite

The role of CT-guided percutaneous drainage of loculated air collections: an institutional experience.

Journal Article Abdom Imaging · October 2015 OBJECTIVE: The purpose of this study is to describe our experience with the role of CT-guided percutaneous drainage of loculated intra-abdominal collections consisting entirely of gas. MATERIALS AND METHODS: An IRB-approved retrospective study analyzing pa ... Full text Link to item Cite

How the radiologist can add value in the evaluation of the pre- and post-surgical pancreas.

Journal Article Abdom Imaging · October 2015 Disease involving the pancreas can be a significant diagnostic challenge to the interpreting radiologist. Moreover, the majority of disease processes involving the pancreas carry high significant morbidity and mortality either due to their natural process ... Full text Link to item Cite

Dual-Energy MDCT for Imaging the Renal Mass.

Journal Article AJR Am J Roentgenol · June 2015 OBJECTIVE: The purpose of this article is to provide the reader with a comprehensive overview of dual-energy MDCT applications for imaging renal masses. CONCLUSION: Dual-energy MDCT has the potential to substantially improve the ability of radiologists to ... Full text Link to item Cite

Review of small-bowel obstruction: the diagnosis and when to worry.

Journal Article Radiology · May 2015 This is a review of small-bowel obstruction written primarily for residents. The review focuses on radiography and computed tomography (CT) for diagnosing small-bowel obstruction and CT for determining complications. (©) RSNA, 2015. ... Full text Link to item Cite

Quantitative and Qualitative Comparison of Single-Source Dual-Energy Computed Tomography and 120-kVp Computed Tomography for the Assessment of Pancreatic Ductal Adenocarcinoma.

Journal Article J Comput Assist Tomogr · 2015 PURPOSE: The aim of this study was to compare contrast-to-noise ratio (CNR) and signal-to-noise ratio (SNR) between pancreatic-phase dual-energy computed tomography (DECT) and 120-kVp CT for pancreatic ductal adenocarcinoma (PDA). MATERIALS AND METHODS: Se ... Full text Link to item Cite

Impact of dual-energy multi-detector row CT with virtual monochromatic imaging on renal cyst pseudoenhancement: in vitro and in vivo study.

Journal Article Radiology · September 2014 PURPOSE: To investigate whether dual-energy multi-detector row computed tomography (CT) with virtual monochromatic imaging can overcome renal cyst pseudoenhancement in a phantom experiment and a clinical study. MATERIALS AND METHODS: This retrospective sin ... Full text Link to item Cite

Pediatric chest and abdominopelvic CT: organ dose estimation based on 42 patient models.

Journal Article Radiology · February 2014 PURPOSE: To estimate organ dose from pediatric chest and abdominopelvic computed tomography (CT) examinations and evaluate the dependency of organ dose coefficients on patient size and CT scanner models. MATERIALS AND METHODS: The institutional review boar ... Full text Link to item Cite

Dose coefficients in pediatric and adult abdominopelvic CT based on 100 patient models.

Journal Article Phys Med Biol · December 21, 2013 Recent studies have shown the feasibility of estimating patient dose from a CT exam using CTDI(vol)-normalized-organ dose (denoted as h), DLP-normalized-effective dose (denoted as k), and DLP-normalized-risk index (denoted as q). However, previous studies ... Full text Link to item Cite

Current update on medullary thyroid carcinoma.

Journal Article AJR Am J Roentgenol · December 2013 OBJECTIVE: This article will review the multimodality imaging spectrum of medullary thyroid carcinoma (MTC) with an emphasis on anatomic and functional imaging. Recent advances in the molecular cytogenetics of this tumor and the impact on diagnosis, progno ... Full text Link to item Cite

Solid pseudo-papillary tumors of the pancreas: current update.

Journal Article Abdom Imaging · December 2013 Solid pseudo-papillary tumors are rare pancreatic tumors, which occur in females and are typically indolent neoplasms. However, atypical, aggressive variants can occur with locally advanced disease or metastases. They have characteristic imaging features, ... Full text Link to item Cite

Imaging of primary and secondary renal lymphoma.

Journal Article AJR Am J Roentgenol · November 2013 OBJECTIVE: This article reviews the CT and MRI patterns of primary and secondary renal lymphomas and discusses the role of percutaneous biopsy in diagnosis and management. CONCLUSION: Renal lymphoma has a variable imaging spectrum and may mimic renal cell ... Full text Link to item Cite

Comparison of conventional and simulated reduced-tube current MDCT for evaluation of suspected appendicitis in the pediatric population.

Journal Article AJR Am J Roentgenol · September 2013 OBJECTIVE: The purpose of this study was to compare CT with conventional and simulated reduced-tube current in the evaluation for acute appendicitis in children. MATERIALS AND METHODS: Validated noise-addition (tube current-reduction) software was used to ... Full text Link to item Cite

FDG-PET/CT characterization of adrenal nodules: diagnostic accuracy and interreader agreement using quantitative and qualitative methods.

Journal Article Acad Radiol · August 2013 PURPOSE: To determine interreader agreement and diagnostic accuracy across varying levels of reader experience using qualitative and quantitative methods of evaluating adrenal nodules using ((18)F)-fluorodeoxyglucose-positron emission tomography/computed t ... Full text Link to item Cite

Invited commentary.

Journal Article Radiographics · 2013 Full text Link to item Cite

Effects of protocol and obesity on dose conversion factors in adult body CT.

Journal Article Med Phys · November 2012 PURPOSE: In computed tomography (CT), organ dose, effective dose, and risk index can be estimated from volume-weighted CT dose index (CTDI(vol)) or dose-length product (DLP) using conversion coefficients. Studies have investigated how these coefficients va ... Full text Link to item Cite

Vascular surgery collaboration during pancreaticoduodenectomy with vascular reconstruction.

Journal Article Ann Vasc Surg · July 2012 BACKGROUND: Once thought to have unresectable disease, pancreatic cancer patients with portal venous involvement are now reported to have comparable survival after pancreaticoduodenectomy (PD) with vascular reconstruction (VR) as compared with patients wit ... Full text Link to item Cite

Characterization of adrenal nodules with dual-energy CT: can virtual unenhanced attenuation values replace true unenhanced attenuation values?

Journal Article AJR Am J Roentgenol · April 2012 OBJECTIVE: The purpose of our study was to investigate whether virtual unenhanced adrenal nodule attenuation values can replace true noncontrast attenuation values. MATERIALS AND METHODS: Twenty-three incidentally discovered adrenal nodules (19 adenomas an ... Full text Link to item Cite

Rate of contrast material extravasations and allergic-like reactions: effect of extrinsic warming of low-osmolality iodinated CT contrast material to 37 degrees C.

Journal Article Radiology · February 2012 PURPOSE: To retrospectively determine whether extrinsic warming of the low-osmolality contrast material iopamidol to 37°C prior to intravenous administration at computed tomography (CT) affects extravasation and allergic-like reaction rates. MATERIALS AND ... Full text Link to item Cite

Genitourinary imaging

Chapter · January 19, 2012 Cite

Genitourinary imaging: Case 23

Chapter · January 19, 2012 Cite

Gastrointestinal imaging

Chapter · January 19, 2012 Cite

Gastrointestinal imaging: Case 3

Chapter · January 19, 2012 Cite

Gastrointestinal imaging: Case 16

Chapter · January 19, 2012 Cite

Imaging appearance of surgical sponges at 1.5 T MRI: an in vitro study.

Journal Article Eur J Radiol · November 2011 OBJECTIVE: To predict the MR appearance of retained surgical textiles in the acute setting by using an in vitro phantom and body MR imaging protocols. METHODS: Three surgical sponges were embedded in clear gelatin. One of these sponges was soaked in fresh ... Full text Link to item Cite

Imaging-guided preoperative hookwire localization of nonpalpable extramammary lesions.

Journal Article AJR Am J Roentgenol · September 2011 OBJECTIVE: Imaging-guided hookwire localization of nonpalpable lesions in the breast is frequently performed preoperatively. Outside the breast, this procedure is useful for planning resection of lesions in anatomic regions without intrinsic landmarks. The ... Full text Link to item Cite

The feasibility of universal DLP-to-risk conversion coefficients for body CT protocols

Journal Article Progress in Biomedical Optics and Imaging - Proceedings of SPIE · May 13, 2011 The effective dose associated with computed tomography (CT) examinations is often estimated from dose-length product (DLP) using scanner-independent conversion coefficients. Such conversion coefficients are available for a small number of examinations, eac ... Full text Cite

Effect of organ enhancement and habitus on estimation of unenhanced attenuation at contrast-enhanced dual-energy MDCT: concepts for individualized and organ-specific spectral iodine subtraction strategies.

Journal Article AJR Am J Roentgenol · May 2011 OBJECTIVE: The purpose of this study was to assess whether habitus and organ enhancement influence iodine subtraction and should be incorporated into spectral subtraction algorithms. SUBJECTS AND METHODS: This study included 171 patients. In the unenhanced ... Full text Link to item Cite

Detection of renal lesion enhancement with dual-energy multidetector CT.

Journal Article Radiology · April 2011 PURPOSE: To determine whether dual-energy multidetector CT enables detection of renal lesion enhancement by using calculated nonenhanced images with spectral-based extraction in a non-body weight-restricted patient population. MATERIALS AND METHODS: Betwee ... Full text Link to item Cite

Low dose computerized tomography for detection of urolithiasis--its effectiveness in the setting of the urology clinic.

Journal Article J Urol · March 2011 PURPOSE: Low dose noncontrast computerized tomography is becoming a common imaging tool to diagnose urolithiasis. We investigated its usefulness as a diagnostic tool in the outpatient setting. MATERIALS AND METHODS: A total of 62 patients with suspected ur ... Full text Link to item Cite

In vivo determination of urinary stone composition using dual energy computerized tomography with advanced post-acquisition processing.

Journal Article J Urol · December 2010 PURPOSE: We assessed whether dual energy computerized tomography with advanced post-image processing can accurately differentiate urinary calculi composition in vivo. MATERIALS AND METHODS: A total of 25 patients scheduled to undergo ureteroscopic/percutan ... Full text Link to item Cite

Prospective double-blinded study of abdominal-pelvic computed tomography guided by the region of tenderness: estimation of detection of acute pathology and radiation exposure reduction.

Journal Article Ann Emerg Med · August 2010 STUDY OBJECTIVE: Computed tomography (CT) is increasingly used for emergency department (ED) patients with abdominal tenderness. CT-related radiation contributes to 2% of US cancers. We hypothesized that in the ED patient with nontraumatic abdominal tender ... Full text Link to item Cite

Colonic schwannoma visualized on FDG PET/CT.

Journal Article Clin Nucl Med · March 2010 Full text Link to item Cite

Dual-energy computed tomography with advanced postimage acquisition data processing: improved determination of urinary stone composition.

Journal Article J Endourol · March 2010 INTRODUCTION: The characterization of urinary calculi using noninvasive methods has the potential to affect clinical management. CT remains the gold standard for diagnosis of urinary calculi, but has not reliably differentiated varying stone compositions. ... Full text Open Access Link to item Cite

Percutaneous abscess drainage in patients with perforated acute appendicitis: effectiveness, safety, and prediction of outcome.

Journal Article AJR Am J Roentgenol · February 2010 OBJECTIVE: The purposes of this study were to retrospectively investigate the effectiveness and safety of CT-guided percutaneous drainage in the treatment of patients with acute appendicitis complicated by perforation and to identify CT findings and proced ... Full text Link to item Cite

Focal cystic high-attenuation lesions: characterization in renal phantom by using photon-counting spectral CT--improved differentiation of lesion composition.

Journal Article Radiology · January 2010 PURPOSE: To evaluate the capability of spectral computed tomography (CT) to improve the characterization of cystic high-attenuation lesions in a renal phantom and to test the hypothesis that spectral CT will improve the differentiation of cystic renal lesi ... Full text Link to item Cite

Dual-energy multidetector CT: how does it work, what can it tell us, and when can we use it in abdominopelvic imaging?

Journal Article Radiographics · 2010 Dual-energy CT provides information about how substances behave at different energies, the ability to generate virtual unenhanced datasets, and improved detection of iodine-containing substances on low-energy images. Knowing how a substance behaves at two ... Full text Link to item Cite

Pancreaticoduodenectomy: frequency and outcome of post-operative imaging-guided percutaneous drainage.

Journal Article Abdom Imaging · November 2009 BACKGROUND: To study the frequency and outcomes of percutaneous imaging-guided drainage following pancreaticoduodenectomy and to assess if fluid collection location correlates with pancreatic duct leak. METHODS: IRB approval was obtained. Three hundred and ... Full text Link to item Cite

CT protocols for acute appendicitis: time for change.

Journal Article AJR Am J Roentgenol · November 2009 Full text Link to item Cite

Efficacy, safety, and biomarkers of neoadjuvant bevacizumab, radiation therapy, and fluorouracil in rectal cancer: a multidisciplinary phase II study.

Journal Article J Clin Oncol · June 20, 2009 PURPOSE: To assess the safety and efficacy of neoadjuvant bevacizumab with standard chemoradiotherapy in locally advanced rectal cancer and explore biomarkers for response. PATIENTS AND METHODS: In a phase I/II study, 32 patients received four cycles of th ... Full text Link to item Cite

Hypervascular liver tumors: low tube voltage, high tube current multidetector CT during late hepatic arterial phase for detection--initial clinical experience.

Journal Article Radiology · June 2009 PURPOSE: To intraindividually compare a low tube voltage (80 kVp), high tube current computed tomographic (CT) technique with a standard CT protocol (140 kVp) in terms of image quality, radiation dose, and detection of malignant hypervascular liver tumors ... Full text Link to item Cite

Unilateral luteoma of pregnancy mimicking a malignant ovarian mass on magnetic resonance and ultrasound.

Journal Article J Magn Reson Imaging · March 2009 Luteoma of pregnancy is a rare, tumorlike ovarian mass that develops during pregnancy and regresses after delivery. Generally, these masses are discovered incidentally during cesarean delivery or tubal ligation. Some of these patients will develop hirsutis ... Full text Link to item Cite

Renal stone assessment with dual-energy multidetector CT and advanced postprocessing techniques: improved characterization of renal stone composition--pilot study.

Journal Article Radiology · March 2009 PURPOSE: To prospectively evaluate the capability of noninvasive, simultaneous dual-energy (DE) multidetector computed tomography (CT) to improve characterization of human renal calculi in an anthropomorphic DE renal phantom by introducing advanced postpro ... Full text Link to item Cite

Adrenal nodules at FDG PET/CT in patients known to have or suspected of having lung cancer: a proposal for an efficient diagnostic algorithm.

Journal Article Radiology · February 2009 PURPOSE: To develop an algorithm to maximize the diagnostic yield of positron emission tomography (PET)/computed tomography (CT) by using defined attenuation and standardized uptake value (SUV) criteria. MATERIALS AND METHODS: An IRB-approved, HIPAA-compli ... Full text Link to item Cite

MDCT of acute appendicitis: value of coronal reformations.

Journal Article Abdom Imaging · 2009 Acute appendicitis is the most common cause of abdominal pain requiring urgent surgery in the United States. The clinical diagnosis can be difficult in patients with atypical presentations and, over the past several decades, computed tomography (CT) has be ... Full text Link to item Cite

Calcified vascular plaque specimens: assessment with cardiac dual-energy multidetector CT in anthropomorphically moving heart phantom.

Journal Article Radiology · October 2008 PURPOSE: To evaluate whether dual-energy multidetector computed tomography (CT) with image postprocessing techniques enhances accuracy of calcified plaque quantification beyond the scope of single-energy multidetector CT, by using optical coherence tomogra ... Full text Link to item Cite

Lipid-poor adenomas on unenhanced CT: does histogram analysis increase sensitivity compared with a mean attenuation threshold?

Journal Article AJR Am J Roentgenol · July 2008 OBJECTIVE: The purpose of our study was to evaluate the efficacy of CT histogram analysis for further characterization of lipid-poor adenomas on unenhanced CT. MATERIALS AND METHODS: One hundred thirty-two adrenal nodules were identified in 104 patients wi ... Full text Link to item Cite

Emergency department imaging: current practice.

Journal Article J Am Coll Radiol · July 2008 PURPOSE: To provide a snapshot of the demographics of radiologists providing coverage for emergency departments (EDs) and current imaging practices in EDs in the United States. METHODS: An online survey was created with Views Flash 3 software (Cogix, Monte ... Full text Link to item Cite

Coronary stent patency: dual-energy multidetector CT assessment in a pilot study with anthropomorphic phantom.

Journal Article Radiology · June 2008 PURPOSE: To prospectively evaluate, by optimizing image acquisition and introducing alternative image postprocessing techniques, dual-energy multidetector computed tomography (CT) for depiction of the lumens of coronary artery stents placed in a moving ant ... Full text Link to item Cite

Sonohysterography: do 3D reconstructed images provide additional value?

Journal Article AJR Am J Roentgenol · April 2008 OBJECTIVE: The purpose of this study was to retrospectively determine the value of adding 3D multiplanar sonography to 2D sonohysterography. MATERIALS AND METHODS: Between September 2003 and April 2005, 80 women (mean age, 43.5 years; range, 26-78 years) u ... Full text Link to item Cite

CT colonography: investigation of the optimum reader paradigm by using computer-aided detection software.

Conference Radiology · February 2008 PURPOSE: To prospectively compare the diagnostic performance and time efficiency of both second and concurrent computer-aided detection (CAD) reading paradigms for retrospectively obtained computed tomographic (CT) colonography data sets by using consensus ... Full text Link to item Cite

Conventional and reduced radiation dose of 16-MDCT for detection of nephrolithiasis and ureterolithiasis.

Journal Article AJR Am J Roentgenol · January 2008 OBJECTIVE: Our purpose was to prospectively compare the reader compatibility and acceptability of a range of reduced-dose 16-MDCT images with standard-dose 16-MDCT images for the detection of nephroureterolithiasis using a dose reduction simulation techniq ... Full text Link to item Cite

New classes of anticoagulation and antiplatelet agents: preprocedure management and safety guidelines for imaging-guided intervention.

Journal Article J Comput Assist Tomogr · 2008 OBJECTIVE: New medications are available for prophylaxis of deep venous thrombosis, the treatment of venous thromboembolism, and also to reduce the risk of acute coronary syndrome and stroke. The purpose of this review is to provide the radiologist a pract ... Full text Link to item Cite

Hypervascular liver tumors: low tube voltage, high tube current multi-detector row CT for enhanced detection--phantom study.

Journal Article Radiology · January 2008 PURPOSE: To prospectively evaluate, for the depiction of simulated hypervascular liver lesions in a phantom, the effect of a low tube voltage, high tube current computed tomographic (CT) technique on image noise, contrast-to-noise ratio (CNR), lesion consp ... Full text Link to item Cite

Assessment of the myocardium on 2-phase cardiac multidetector computed tomography: does cyclic cardiac contraction influence myocardial attenuation?

Journal Article J Comput Assist Tomogr · 2008 OBJECTIVE: To analyze changes in attenuation of non-contrast-enhanced and contrast-enhanced myocardium throughout the cardiac cycle and to determine the effect of myocardial location, cardiac phase, and dominant coronary perfusion type on myocardial attenu ... Full text Link to item Cite

Assessment of the optimal temporal window for intravenous CT cholangiography.

Journal Article Eur Radiol · October 2007 The optimal temporal window of intravenous (IV) computed tomography (CT) cholangiography was prospectively determined. Fifteen volunteers (eight women, seven men; mean age, 38 years) underwent dynamic CT cholangiography. Two unenhanced images were acquired ... Full text Link to item Cite

Pneumatosis intestinalis in the adult: benign to life-threatening causes.

Journal Article AJR Am J Roentgenol · June 2007 OBJECTIVE: The frequency of detection of pneumatosis intestinalis (PI) appears to be increasing. This increase may be the result of increased CT use. New medications and surgical procedures have been reported to be associated with an increase in the incide ... Full text Link to item Cite

Multi-detector row CT of the small bowel: peak enhancement temporal window--initial experience.

Journal Article Radiology · May 2007 PURPOSE: To prospectively determine quantitatively and qualitatively the timing of maximal enhancement of the normal small-bowel wall by using contrast material-enhanced multi-detector row computed tomography (CT). MATERIALS AND METHODS: This HIPAA-complia ... Full text Link to item Cite

Complete pathological response to bevacizumab and chemoradiation in advanced rectal cancer.

Journal Article Nat Clin Pract Oncol · May 2007 BACKGROUND: Localized rectal cancer responds well to 5-fluorouracil and radiation-based regimens. A phase I-II trial is currently testing the efficacy of adding bevacizumab, a VEGF-specific antibody, to standard chemoradiotherapy. The case presented here i ... Full text Link to item Cite

Accuracy of abdominal radiography in acute small-bowel obstruction: does reviewer experience matter?

Journal Article AJR Am J Roentgenol · March 2007 OBJECTIVE: The purposes of this study were to determine the accuracy of abdominal radiography in the detection of acute small-bowel obstruction (SBO), to assess the role of reviewer experience, and to evaluate individual radiographic signs of SBO. MATERIAL ... Full text Link to item Cite

Practical approach to diagnostic CT combined with PET.

Journal Article AJR Am J Roentgenol · March 2007 OBJECTIVE: Protocols for PET/CT are not yet standardized. In particular, image quality, utilization, and reporting of the findings of the CT component of PET/CT can vary widely, making it complicated for physicians to request the appropriate information. I ... Full text Link to item Cite

Contrast-enhanced hepatic magnetic resonance angiography at 3 T: does parallel imaging improve image quality?

Journal Article J Comput Assist Tomogr · 2007 PURPOSE: To evaluate whether hepatic magnetic resonance angiography (MRA) performed at 3 T and acquired with a parallel imaging acceleration factor of 2 provides satisfactory image quality and adequate contrast-to-noise, compared with an acquisition withou ... Full text Link to item Cite

Abdominal pain: coronal reformations from isotropic voxels with 16-section CT--reader lesion detection and interpretation time.

Journal Article Radiology · January 2007 PURPOSE: To retrospectively assess if reader detection of intraabdominal pathologic findings on coronal reformations from isotropic voxels at 16-section computed tomography (CT) was similar to reader detection on transverse scans. MATERIALS AND METHODS: Th ... Full text Link to item Cite

MR liver imaging and cholangiography in the presence of surgical metallic clips at 1.5 and 3 Tesla.

Journal Article Eur Radiol · October 2006 To evaluate whether clips from prior cholecystectomy impair image quality during magnetic resonance cholangiography (MRC) at 3 Tesla (T) compared with 1.5 T, surgical clips were embedded in a gel phantom and positioned at predefined distances from a fluid- ... Full text Link to item Cite

Prospective comparison of patient experience with colon imaging tests.

Journal Article Am J Med · September 2006 PURPOSE: Patient experience varies with the currently available colon imaging tests, including air contrast barium enema, computed tomographic colonography, and colonoscopy. We examined differences in patient experience with colon imaging tests and whether ... Full text Link to item Cite

Comparison of radiologists and technologists in the performance of air-contrast barium enemas.

Journal Article AJR Am J Roentgenol · September 2006 OBJECTIVE: The purpose of this study was to determine whether the rate of polyp detection and the quality of air-contrast barium enema (ACBE) procedures performed by technologists differ from those performed by radiologists. CONCLUSION: Our results showed ... Full text Link to item Cite

Radiation dose to the female breast from 16-MDCT body protocols.

Journal Article AJR Am J Roentgenol · June 2006 OBJECTIVE: The objective of our study was to determine the radiation dose to the female breast from current 16-MDCT body examinations. MATERIALS AND METHODS: Metal oxide semiconductor field effect transistor (MOSFET) detectors were placed in four quadrants ... Full text Link to item Cite

A randomized comparison of EUS-guided FNA versus CT or US-guided FNA for the evaluation of pancreatic mass lesions.

Journal Article Gastrointest Endosc · June 2006 BACKGROUND: Diagnosing pancreatic cancer by EUS-FNA is a potentially appealing alternative to percutaneous biopsy. AIM: To compare EUS-FNA with CT or US-guided FNA for diagnosing pancreatic cancer. DESIGN: Single center, prospective, randomized, cross-over ... Full text Link to item Cite

Postprocedure sepsis in imaging-guided percutaneous hepatic abscess drainage: how often does it occur?

Journal Article AJR Am J Roentgenol · May 2006 OBJECTIVE: This retrospective study was conducted to determine the incidence of sepsis at our institution after percutaneous drainage of a hepatic abscess. MATERIALS AND METHODS: Thirty-three patients with a hepatic abscess treated using percutaneous aspir ... Full text Link to item Cite

Causes of errors in polyp detection at air-contrast barium enema examination.

Journal Article Radiology · April 2006 PURPOSE: To retrospectively determine the cause of errors in air-contrast barium enema (ACBE) examination for detection of polyps 6 mm or larger. MATERIALS AND METHODS: The study had institutional review board approval. Informed consent was waived for this ... Full text Link to item Cite

Radiation dose to the fetus from body MDCT during early gestation.

Journal Article AJR Am J Roentgenol · March 2006 OBJECTIVE: The purpose of our study was to determine radiation dose to the fetus at early gestation when contemporary MDCT scanners are used for common clinical indications. MATERIALS AND METHODS: Anthropomorphic phantoms were constructed to reflect a preg ... Full text Link to item Cite

Abdominal MR imaging at 3T.

Journal Article Magn Reson Imaging Clin N Am · February 2006 Body MR imaging at 3T is in its infancy, and should improve substantially over the next several years. Radiologists need to be aware of several limitations that are based on the laws of physics: Overall, the gain in SNR at 3T will be less than twofold (wit ... Full text Link to item Cite

Small-bowel obstruction: coronal reformations from isotropic voxels at 16-section multi-detector row CT.

Journal Article Radiology · January 2006 PURPOSE: To retrospectively assess the added value of coronal reformations of the abdomen and pelvis from isotropic voxels by using 16-section multi-detector row computed tomography (CT) for the diagnosis of small-bowel obstruction (SBO). MATERIALS AND MET ... Full text Link to item Cite

Optimization of multiplanar reformations from isotropic data sets acquired with 16-detector row helical CT scanner.

Journal Article Radiology · January 2006 Institutional review board approval and waiver of consent were obtained for the patient component of this retrospective HIPAA-compliant study. By using an anthropomorphic phantom and metal oxide semiconductor field effect transistor detectors, radiation do ... Full text Link to item Cite

Efficacy and safety of MR imaging with liver-specific contrast agent: U.S. multicenter phase III study.

Journal Article Radiology · October 2005 PURPOSE: To assess prospectively the efficacy and safety of postcontrast magnetic resonance (MR) imaging with gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA) compared with that of precontrast MR imaging in patients who are known t ... Full text Link to item Cite

Acute appendicitis: added diagnostic value of coronal reformations from isotropic voxels at multi-detector row CT.

Journal Article Radiology · June 2005 PURPOSE: To assess retrospectively the added value of coronal reformations from isotropic voxels obtained with 16-section multi-detector row computed tomography (CT) of the abdomen and pelvis in patients with suspected acute appendicitis. MATERIALS AND MET ... Full text Link to item Cite

MDCT of abdominal wall hernias: is there a role for valsalva's maneuver?

Journal Article AJR Am J Roentgenol · March 2005 OBJECTIVE: Our objective was to evaluate the role of Valsalva's maneuver during MDCT for the diagnosis and characterization of abdominal wall hernias. SUBJECTS AND METHODS: From September 2002 to May 2003, 100 consecutive patients (37 men and 63 women; mea ... Full text Link to item Cite

Significance of histological response to preoperative chemoradiotherapy for pancreatic cancer.

Journal Article Ann Surg Oncol · March 2005 BACKGROUND: Neoadjuvant (preoperative) chemoradiotherapy (CRT) for pancreatic cancer offers theoretical advantages over the standard approach of surgery followed by adjuvant CRT. We hypothesized that histological responses to CRT would be significant progn ... Full text Link to item Cite

Ultrasound guided biopsy: what's new?

Journal Article Ultrasound Q · March 2005 Ultrasound guided intervention has become the preferred method to diagnose primary neoplasms and suspected metastatic disease. With developments in technology and changes in practice patterns, the types of referrals for ultrasound guided intervention will ... Link to item Cite

Analysis of air contrast barium enema, computed tomographic colonography, and colonoscopy: prospective comparison.

Journal Article Lancet · January 22, 2005 BACKGROUND: The usefulness of currently available colon imaging tests, including air contrast barium enema (ACBE), computed tomographic colonography (CTC), and colonoscopy, to detect colon polyps and cancers is uncertain. We aimed to assess the sensitivity ... Full text Link to item Cite

CT-guided percutaneous drainage of a duodenal hematoma.

Journal Article AJR Am J Roentgenol · January 2005 Full text Link to item Cite

Peer review at the American Journal of Roentgenology: how reviewer and manuscript characteristics affected editorial decisions on 196 major papers.

Journal Article AJR Am J Roentgenol · December 2004 OBJECTIVE: The objective of this study was to examine the relative influence of manuscript characteristics and peer-reviewer attributes in the assessment of manuscripts. MATERIALS AND METHODS: Over a 6-month period, all major papers submitted to the Americ ... Full text Link to item Cite

Practice patterns in percutaneous image-guided intraabdominal abscess drainage: survey of academic and private practice centers.

Journal Article Radiology · December 2004 PURPOSE: To evaluate current practice patterns of percutaneous image-guided abdominal and pelvic abscess drainage in academic and private practice centers. MATERIALS AND METHODS: The institutional review board did not require approval for this study. In a ... Full text Link to item Cite

Dual-phase 3D MDCT angiography for evaluation of the liver before hepatic resection.

Journal Article AJR Am J Roentgenol · December 2004 OBJECTIVE: We sought to evaluate the accuracy of dual-phase MDCT angiography for assessing the liver before hepatic resection and to compare 2D and 3D images for quality and arterial branch visualization. MATERIALS AND METHODS: Sixty-three patients with co ... Full text Link to item Cite

Virtual colonoscopy.

Journal Article JAMA · July 28, 2004 Full text Link to item Cite

A wolf in sheep's clothing: a non-functioning islet cell tumor of the pancreas masquerading as a microcystic (serous cystic) adenoma.

Journal Article JOP · July 2004 CONTEXT: The endosonographic appearance of a microcystic "honeycomb" lesion of the pancreas usually indicates a serous cystic adenoma. CASE REPORT: We report a case of a non-functioning islet cell tumor that has the typical microcystic "honeycomb" appearan ... Link to item Cite

Percutaneous biopsy of periarterial soft tissue cuffs in the diagnosis of pancreatic carcinoma.

Journal Article Abdom Imaging · 2004 Pancreatic cancer may present on computed tomography (CT) as an isolated cuff of tumor surrounding the superior mesenteric artery (SMA) or celiac trunk, without an identifiable pancreatic mass. We reviewed our experience with imaging-guided biopsy of the s ... Full text Link to item Cite

MDCT of abdominal wall hernias: Is there a role for Valsalva maneuver?

Conference AMERICAN JOURNAL OF ROENTGENOLOGY · January 1, 2004 Link to item Cite

Lower frequency of peritoneal carcinomatosis in patients with pancreatic cancer diagnosed by EUS-guided FNA vs. percutaneous FNA.

Journal Article Gastrointest Endosc · November 2003 BACKGROUND: Studies have suggested an increased risk of peritoneal seeding in patients with pancreatic cancer diagnosed by percutaneous FNA. EUS-FNA is an alternate method of diagnosis. The aim of this study was to compare the frequency of peritoneal carci ... Full text Link to item Cite

Computerized tomographic colonography: performance evaluation in a retrospective multicenter setting.

Journal Article Gastroenterology · September 2003 BACKGROUND & AIMS: No multicenter study has been reported evaluating the performance and interobserver variability of computerized tomographic colonography. The aim of this study was to assess the accuracy of computerized tomographic colonography for detec ... Full text Link to item Cite

Suspected appendicitis.

Other N Engl J Med · July 17, 2003 Full text Link to item Cite

Usefulness of sonographic guidance during percutaneous biopsy of mesenteric masses.

Journal Article AJR Am J Roentgenol · June 2003 OBJECTIVE: The objective of our study was to determine the usefulness of sonographic guidance for biopsy of mesenteric masses. MATERIALS AND METHODS: Twenty-five sonographically guided percutaneous biopsies of mesenteric masses were performed in 23 patient ... Full text Link to item Cite

Optimization of eight-element multi-detector row helical CT technology for evaluation of the abdomen.

Journal Article Radiology · June 2003 PURPOSE: To evaluate protocols for abdominal imaging with an eight-element multi-detector row computed tomographic (CT) scanner. MATERIALS AND METHODS: An eight-element helical CT scanner was used to acquire data in two phantoms with four-element (pitch, 0 ... Full text Link to item Cite

Biliary imaging: a review.

Journal Article Gastroenterology · May 2003 Full text Link to item Cite

Single versus multi-detector row CT: comparison of radiation doses and dose profiles.

Journal Article Acad Radiol · April 2003 RATIONALE AND OBJECTIVES: The purpose of this study was twofold: (a) to compare the radiation dose profile between computed tomography (CT) with a single detector row (SD) and with a multi-detector row (MD) and (b) to compare specific organ doses between S ... Full text Link to item Cite

Clinical practice. Suspected appendicitis.

Journal Article N Engl J Med · January 16, 2003 Full text Link to item Cite

Suspected appendicitis - Reply

Other NEW ENGLAND JOURNAL OF MEDICINE · 2003 Cite

The role of F-18 FDG positron emission tomography in preoperative assessment of the liver in patients being considered for curative resection of hepatic metastases from colorectal cancer.

Journal Article Clin Nucl Med · August 2002 PURPOSE: The authors' goal was to determine the sensitivity and specificity of F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) for identifying patients with hepatic metastases from colorectal cancer and the accuracy of PET for determining ... Full text Link to item Cite

Liver lesions: manganese-enhanced MR and dual-phase helical CT for preoperative detection and characterization comparison with receiver operating characteristic analysis.

Journal Article Radiology · May 2002 PURPOSE: The purpose of this study was to compare, by means of receiver operating characteristic (ROC) analysis, dual-phase helical computed tomography (CT) and manganese-enhanced magnetic resonance (MR) imaging in the detection and characterization of hep ... Full text Link to item Cite

Simple pancreatic cysts: CT and endosonographic appearances.

Journal Article AJR Am J Roentgenol · April 2002 OBJECTIVE. This report describes the CT and endoscopic sonographic appearance of simple pancreatic cysts in three adults. CONCLUSION. Simple pancreatic cysts are typically an incidental finding in adults who have no history of pancreatic disease. The imagi ... Full text Link to item Cite

Downstaging of hepatocellular carcinoma and liver metastases from colorectal cancer by selective intra-arterial chemotherapy.

Journal Article Surgery · April 2002 BACKGROUND: Although resection is the sole chance of cure in patients with hepatocellular carcinoma (HCC) or metastatic colorectal cancer to the liver, most patients are not candidates for surgery at the time of diagnosis. Strategies aiming at downstaging ... Full text Link to item Cite

Liver: single breath-hold dynamic subtraction CT with multi-detector row helical technology feasibility study.

Journal Article Radiology · January 2002 Fifty-two patients with known or suspected hypervascular malignancy were examined to determine the technical feasibility of performing single-breath-hold dynamic subtraction computed tomography (CT) of the liver with multi-detector row helical CT. The prec ... Full text Link to item Cite

Preoperative evaluation of potential renal donors using multidetector CT.

Journal Article Abdom Imaging · 2002 Preoperative knowledge of vascular anatomy and parenchymal disease is critical in patients undergoing laparoscopic donor nephrectomy. Multidetector computed tomography represents a substantial improvement in technology that lends itself to the comprehensiv ... Full text Link to item Cite

Neoadjuvant chemoradiation for localized adenocarcinoma of the pancreas.

Journal Article Ann Surg Oncol · December 2001 BACKGROUND: The use of neoadjuvant (preoperative) chemoradiotherapy (CRT) for pancreatic cancer has been advocated for its potential ability to optimize patient selection for surgical resection and to downstage locally advanced tumors. This article reports ... Full text Link to item Cite

Sonographically guided thrombin injection of iatrogenic femoral pseudoaneurysms: further experience of a single institution.

Journal Article AJR Am J Roentgenol · August 2001 OBJECTIVE: In September 1998, we began to treat iatrogenic femoral pseudoaneurysms with direct thrombin injection under sonographic guidance. Our purpose was to determine the success and complication rate of this technique. SUBJECTS AND METHODS: We treated ... Full text Link to item Cite

CT fluoroscopy--guided interventional procedures: techniques and radiation dose to radiologists.

Journal Article Radiology · July 2001 PURPOSE: To determine the radiation dose to radiologists who perform computed tomographic (CT) fluoroscopic interventional procedures by using a quick-check method and a low-milliampere technique. MATERIALS AND METHODS: Two hundred twenty CT fluoroscopy--g ... Full text Link to item Cite

Evaluation of the liver for metastatic disease.

Journal Article Semin Liver Dis · May 2001 Metastatic disease of the liver accounts for the vast majority of detected liver masses. In patients with suspected metastatic disease, cross-sectional imaging with ultrasound (US), computed tomography (CT), or magnetic resonance imaging (MRI) is critical. ... Full text Link to item Cite

Breath-hold three-dimensional CT of the liver with multi-detector row helical CT.

Journal Article Radiology · April 2001 PURPOSE: To compare image quality on transverse source images and coronal and sagittal reformations to determine the feasibility of using single-breath-hold three-dimensional liver computed tomography (CT) with multi-detector row helical CT in patients sus ... Full text Link to item Cite

Vaginitis emphysematosa: CT and review of the literature.

Journal Article AJR Am J Roentgenol · March 2001 OBJECTIVE: This report describes the CT appearance of vaginitis emphysematosa. CONCLUSION: Vaginitis emphysematosa is characterized by gas-filled cysts in the vaginal wall, in a pattern similar to pneumatosis of the intestines or bladder. This bacterial va ... Full text Link to item Cite

An electronic device for needle placement during sonographically guided percutaneous intervention.

Journal Article Radiology · March 2001 An electronic device for guiding needle placement during sonographically directed percutaneous intervention was tested in a phantom and then in patients. In the phantom, targeting accuracy was similar for use of the needle guide alone, the needle guide wit ... Full text Link to item Cite

Quantitative and qualitative evaluation of volume of low osmolality contrast medium needed for routine helical abdominal CT.

Conference AJR Am J Roentgenol · March 2001 OBJECTIVE: The purpose of our study was to determine the minimum optimal dose of IV contrast medium for helical CT that can preserve image quality while reducing cost. SUBJECTS AND METHODS: Four hundred sixty-three patients from six centers were enrolled i ... Full text Link to item Cite

Staging of pancreatic cancer before and after neoadjuvant chemoradiation.

Journal Article J Gastrointest Surg · 2001 Neoadjuvant chemoradiation therapy is used at many institutions for treatment of localized adenocarcinoma of the pancreas. Accurate staging before neoadjuvant therapy identifies patients with distant metastatic disease, and restaging after neoadjuvant ther ... Full text Link to item Cite

Nonenhanced helical CT and US in the emergency evaluation of patients with renal colic: prospective comparison.

Journal Article Radiology · December 2000 PURPOSE: To compare nonenhanced helical computed tomography (CT) with ultrasonography (US) for the depiction of urolithiasis. MATERIALS AND METHODS: During 9 months, 45 patients (mean age, 44 years; mean weight, 92.5 kg) prospectively underwent both nonenh ... Full text Link to item Cite

Detection of hepatic lesions in candidates for surgery: comparison of ferumoxides-enhanced MR imaging and dual-phase helical CT.

Journal Article AJR Am J Roentgenol · December 2000 OBJECTIVE: The purpose of this study was to compare the use of phased array MR imaging of the liver at 1.5 T with and without ferumoxides with dual-phase helical CT for the detection of hepatic lesions in candidates for hepatic surgery. SUBJECTS AND METHOD ... Full text Link to item Cite

Value of prone positioning in the ultrasonographic diagnosis of gallstones: prospective study.

Journal Article J Ultrasound Med · September 2000 To determine prospectively the value of prone/postprone positioning in the sonographic detection of gallstones, 682 patients were scanned in the recumbent, erect, and prone or postprone positions. The gallbladder was evaluated for an intraluminal hyperecho ... Full text Link to item Cite

Transjugular intrahepatic portosystemic shunts (TIPS): effects of respiratory state and patient position on the measurement of Doppler velocities.

Journal Article AJR Am J Roentgenol · July 2000 OBJECTIVE: The purpose of this prospective study was to examine the effects of patient position and respiratory state on the measurements of Doppler velocities in transjugular intrahepatic portosystemic shunts. SUBJECTS AND METHODS: Thirty-eight transjugul ... Full text Link to item Cite

Stop compressing, start injecting.

Journal Article AJR Am J Roentgenol · June 2000 Full text Link to item Cite

Stop compressing, start injecting - Reply

Journal Article AMERICAN JOURNAL OF ROENTGENOLOGY · June 1, 2000 Link to item Cite

Treatment of iatrogenic femoral arterial pseudoaneurysms: comparison of US-guided thrombin injection with compression repair.

Journal Article Radiology · May 2000 PURPOSE: To evaluate and compare the treatment of iatrogenic femoral arterial pseudoaneurysms by using ultrasonographically (US) guided direct thrombin injection with US-guided compression repair. MATERIALS AND METHODS: Twenty-six patients with iatrogenic ... Full text Link to item Cite

Comparison of sonographic and CT guidance techniques: does CT fluoroscopy decrease procedure time?

Journal Article AJR Am J Roentgenol · April 2000 OBJECTIVE: Procedure times for percutaneous biopsies were compared for various guidance techniques including helical CT, CT fluoroscopy, sonography with an attached needle guide, and freehand sonography with computer guidance. MATERIALS AND METHODS: Three ... Full text Link to item Cite

Hepatic parenchymal enhancement during triple-phase helical CT: can it be used to predict which patients with breast cancer will develop hepatic metastases?

Journal Article Radiology · March 2000 PURPOSE: To evaluate the efficacy of hepatic enhancement characteristics for identification of patients with breast cancer who are at risk for future hepatic metastases. MATERIALS AND METHODS: Triple-phase helical computed tomography (CT) was performed in ... Full text Link to item Cite

Helical CT cholangiography with three-dimensional volume rendering using an oral biliary contrast agent: feasibility of a novel technique.

Journal Article AJR Am J Roentgenol · February 2000 OBJECTIVE: We evaluated the feasibility and image quality of a new noninvasive biliary imaging technique: helical CT cholangiography with three-dimensional volume rendering using an oral biliary contrast agent. SUBJECTS AND METHODS: Nineteen subjects inclu ... Full text Link to item Cite

Evaluation of pseudoenhancement of renal cysts during contrast-enhanced CT.

Journal Article AJR Am J Roentgenol · February 2000 OBJECTIVE: The purpose of our study was to evaluate renal cyst pseudoenhancement during helical CT in a phantom model and in patients. MATERIALS AND METHODS: Iodine baths containing water-filled spheres and cylinders were constructed to simulate cysts in e ... Full text Link to item Cite

Acute cholecystitis: CT findings.

Journal Article Semin Ultrasound CT MR · February 2000 Some patients with acute cholecystitis may have symptoms suggestive of an abscess or other intra-abdominal inflammation and, therefore, may be referred for a CT of the abdomen. This report reviews the pathophysiology, clinical presentation, and CT findings ... Full text Link to item Cite

Use of fibrin sealant as a hemostatic agent after liver biopsy in swine.

Journal Article J Vasc Interv Radiol · 2000 PURPOSE: To determine whether fibrin sealant injected into the tract created by liver biopsy can be used to decrease postprocedural bleeding. An innovative delivery system was used to deploy the fibrin sealant. MATERIALS AND METHODS: Fibrin sealant is a he ... Full text Link to item Cite

Pelvic CT morphometry in Down syndrome: implications for prenatal US evaluation--preliminary results.

Journal Article Radiology · January 2000 PURPOSE: To characterize pelvic morphometric differences in patients with and those without Down syndrome by using computed tomography (CT) and to determine useful indexes for ultrasonographic (US) evaluation. MATERIALS AND METHODS: Pelvic CT scans in seve ... Full text Link to item Cite

Sonographically guided compression repair of pseudoaneurysms: further experience from a single institution.

Journal Article AJR Am J Roentgenol · December 1999 OBJECTIVE: Our purpose was to perform a comprehensive review of our experience with compression of postcatheterization groin pseudoaneurysms. MATERIALS AND METHODS: Two hundred eighty-one patients underwent 306 sonographically guided compression procedures ... Full text Link to item Cite

Percutaneous liver biopsy: a cost-benefit analysis comparing sonographic and CT guidance.

Journal Article AJR Am J Roentgenol · November 1999 OBJECTIVE: We compared the relative cost of a liver biopsy performed with sonographic guidance with that of one performed with CT guidance in a cost-benefit analysis model. MATERIALS AND METHODS: Variables were estimated from a search of the literature and ... Full text Link to item Cite

PACS in sonography: accuracy of interpretation using film compared with monitor display. Picture archiving and communication systems.

Journal Article AJR Am J Roentgenol · November 1999 OBJECTIVE: The goal of this study was to determine the relative accuracy of interpretation of sonography when viewed on a monitor or on film. MATERIALS AND METHODS: Four radiologists twice interpreted a series of 440 sonograms using the following sequences ... Full text Link to item Cite

Indeterminate findings on imaging-guided biopsy: should additional intervention be pursued?

Journal Article AJR Am J Roentgenol · August 1999 OBJECTIVE: Our purpose was to determine the outcome of patients in whom the results of imaging-guided biopsies were indeterminate and to examine factors that may affect outcome. MATERIALS AND METHODS: During a 25-month period, 619 consecutive imaging-guide ... Full text Link to item Cite

Fine-needle aspiration with flow cytometric immunophenotyping for primary diagnosis of intra-abdominal lymphomas.

Journal Article Diagn Cytopathol · August 1999 Cytomorphology in conjunction with immunophenotypic characterization is becoming increasingly used for the primary diagnosis of non-Hodgkin's lymphomas (NHL). This combination is especially advantageous for the diagnosis of intra-abdominal and intrathoraci ... Full text Link to item Cite

Imaging-guided percutaneous biopsy of focal splenic lesions: update on safety and effectiveness.

Journal Article AJR Am J Roentgenol · April 1999 OBJECTIVE: The purpose of this study is to determine the safety and effectiveness of percutaneous imaging-guided biopsy in the diagnosis of focal splenic lesions. MATERIALS AND METHODS: From May 1995 to November 1997, 20 imaging-guided biopsies of focal sp ... Full text Link to item Cite

Comparison of unenhanced, hepatic arterial-dominant, and portal venous-dominant phase helical CT for the detection of liver metastases in women with breast carcinoma.

Journal Article AJR Am J Roentgenol · April 1999 OBJECTIVE: The purpose of this study was to evaluate triple-phase helical CT for detection of hepatic metastases from breast carcinoma. SUBJECTS AND METHODS: Breast cancer patients were studied prospectively with triple-phase helical CT in 300 consecutive ... Full text Link to item Cite

Pancreatitis complicated by gland necrosis: evolution of findings on contrast-enhanced CT.

Journal Article J Comput Assist Tomogr · 1999 PURPOSE: The purpose of this work was to investigate the natural history of pancreatic necrosis on contrast-enhanced CT in patients managed nonoperatively. METHOD: A computer-based radiology information search revealed 32 patients with pancreatic necrosis ... Full text Link to item Cite

Ovarian cyst rupture causing hemoperitoneum: imaging features and the potential for misdiagnosis.

Journal Article Abdom Imaging · 1999 BACKGROUND: To describe the spectrum of imaging findings and clinical presentations produced after rupture and hemorrhage of an ovarian cyst. METHODS: Imaging studies and hospital records of nine patients who were ultimately diagnosed with hemoperitoneum f ... Full text Link to item Cite

Helical liver CT with computer-assisted bolus-tracking technology: is it possible to predict which patients will not achieve a threshold of enhancement?

Journal Article Radiology · December 1998 PURPOSE: To determine how often a prescribed threshold of hepatic contrast material enhancement is not reached at helical computed tomography (CT) of the liver in patients in a tertiary teaching hospital-based practice and which variables are predictive of ... Full text Link to item Cite

Diagnostic and therapeutic ERCP are beneficial in the management of pancreatic necrosis

Journal Article Gastrointestinal Endoscopy · December 1, 1998 There is considerable debate regarding the optimal management of pancreatic necrosis (PN). The timing and utility of endoscopic retrograde cholangiopancreatograms (ERCP) in the subset of acute pancreatitis who have PN is unclear. Objectives: It To determin ... Cite

Endoscopic retrograde pancreatography after pancreaticojejunostomy

Conference Gastrointestinal Endoscopy · December 1, 1998 Background: Retrograde surgical drainage is the treatment of choice for relieving incapacitating abdominal pain in patients (pts) with chronic pancreatitis (CP) and pancreatic duct (PD) dilatation. Lateral pancreaticojejunostomy (PJEJ) - the so-called modi ... Cite

Abdominal percutaneous interventional procedures: comparison of CT and US guidance.

Journal Article Radiology · June 1998 PURPOSE: To compare ultrasound (US) with computed tomography (CT) as a guidance modality for percutaneous interventional procedures. MATERIALS AND METHODS: A database of abdominal interventional procedures was reviewed for the 6 months preceding and 6 mont ... Full text Link to item Cite

Doppler sonography of the portal vein and hepatic artery: measurement of a prandial effect in healthy subjects.

Journal Article Radiology · June 1998 PURPOSE: To determine if the prandial effect outweighs variability in the measurement of portal venous blood flow and hepatic arterial resistive index. MATERIALS AND METHODS: Fourteen healthy adult volunteers fasted overnight. For eight of the subjects, tw ... Full text Link to item Cite

Dr Paulson and colleagues respond

Journal Article Radiology · March 1998 Full text Cite

Carcinoid metastases to the liver: role of triple-phase helical CT.

Journal Article Radiology · January 1998 PURPOSE: To evaluate triple-phase helical computed tomography (CT) of carcinoid liver metastases. MATERIALS AND METHODS: Triple-phase helical CT was performed in 31 patients with proved carcinoid liver metastases. Hepatic arterial-dominant phase (HAP) and ... Full text Link to item Cite

Interobserver variability in the interpretation of unenhanced helical CT for the diagnosis of ureteral stone disease.

Journal Article J Comput Assist Tomogr · 1998 PURPOSE: The purpose of this study was to analyze interobserver agreement in the interpretation of unenhanced helical CT (UHCT) for the evaluation of ureteral stone disease and obstruction. METHOD: One hundred three UHCT examinations were independently and ... Full text Link to item Cite

Sonographic estimates of vein size in the lower extremities: subjective assessment compared with direct measurement.

Journal Article J Clin Ultrasound · 1998 PURPOSE: We studied whether subjective impression of vein size is a valid means of assessment during sonographic evaluation for deep vein thrombosis. METHODS: Diameter was assessed at 5 predetermined venous segments on 975 legs of 721 patients referred for ... Full text Link to item Cite

Contrast-enhanced CT of intrahepatic and hilar cholangiocarcinoma: delay time for optimal imaging.

Journal Article AJR Am J Roentgenol · December 1997 OBJECTIVE: The purpose of this study was to determine the optimal time for obtaining delayed images with contrast-enhanced CT in patients who have intrahepatic or hilar cholangiocarcinoma. SUBJECTS AND METHODS: CT studies were performed in 25 consecutive p ... Full text Link to item Cite

Pancreatic malignancy: effect of dual-phase helical CT in tumor detection and vascular opacification.

Journal Article Radiology · November 1997 PURPOSE: To determine the relative value of hepatic arterial and portal venous phase helical computed tomographic (CT) scans for tumor detection and vascular opacification in patients with pancreatic malignancy. MATERIALS AND METHODS: Ninety-five patients ... Full text Link to item Cite

Small lymph nodes of the abdomen, pelvis, and retroperitoneum: usefulness of sonographically guided biopsy.

Journal Article Radiology · October 1997 PURPOSE: To evaluate the usefulness of sonographically guided percutaneous biopsy of small lymph nodes in the abdomen, retroperitoneum, and pelvis. MATERIALS AND METHODS: From May 1995 through January 1997, 35 sonographically guided lymph node biopsies wer ... Full text Link to item Cite

Early systole in the healthy kidney: variability of Doppler US waveform parameters.

Journal Article Radiology · October 1997 PURPOSE: To determine the sampling variability of intrarenal Doppler ultrasound (US) indexes of early systole in a screened population of healthy individuals. MATERIALS AND METHODS: Doppler US measurements were obtained in the superior, middle, and inferio ... Full text Link to item Cite

Abdomen after a Puestow procedure: postoperative CT appearance, complications, and potential pitfalls.

Journal Article Radiology · June 1997 PURPOSE: To evaluate the postoperative computed tomographic (CT) appearance, complications, and potential pitfalls after a Puestow procedure (lateral side-to-side pancreaticojejunostomy). MATERIALS AND METHODS: Forty CT examinations were performed after th ... Full text Link to item Cite

Sonographic assessment of lower limb vein diameters: implications for the diagnosis and characterization of deep venous thrombosis.

Journal Article AJR Am J Roentgenol · May 1997 OBJECTIVE: The goals of this study were to define the normal range of diameters in the deep veins of the thigh and to compare this range with diameters of veins with acute thrombus and of veins with chronic changes from prior deep venous thrombosis (DVT). ... Full text Link to item Cite

Zebra pattern: a diagnostically challenging hepatic parenchymal enhancement pattern at CT arterial portography.

Journal Article Radiology · April 1997 PURPOSE: To investigate the effect of arterial injection site and splenic volume on the hepatic zebra pattern seen at computed tomographic (CT) arterial portography. MATERIALS AND METHODS: Images from CT arterial portographic examinations, performed via ei ... Full text Link to item Cite

Doppler US measurement of portal venous flow: variability in healthy fasting volunteers.

Journal Article Radiology · March 1997 PURPOSE: To describe the intrinsic sampling variability of measurements of portal venous flow in healthy volunteers and to estimate the variability attributable to the sonographer, the subject, and the measurement. MATERIALS AND METHODS: In a randomized co ... Full text Link to item Cite

Helical CT for detecting focal liver lesions in patients with breast carcinoma: comparison of noncontrast phase, hepatic arterial phase, and portal venous phase.

Journal Article J Comput Assist Tomogr · 1997 PURPOSE: Our goal was to compare noncontrast phase (NCP), hepatic arterial phase (HAP), and portal venous phase (PVP) helical CT for the detection of focal liver lesions in patients at risk for having metastases from breast carcinoma. METHOD: Eighty-four c ... Full text Link to item Cite

Sonography: the undiscovered jewel of interventional radiology.

Journal Article Radiographics · November 1996 Because most radiologists in the United States have been taught that fluoroscopy and computed tomography (CT) are the best guidance techniques for nonvascular interventional procedures, sonography has been greatly underused in this regard. Recently, sonogr ... Full text Link to item Cite

Temporal artery tap: usefulness and limitations in carotid sonography.

Journal Article Radiology · November 1996 PURPOSE: To examine the effectiveness of percussion of the superficial temporal artery for identification of the external carotid artery (ECA). MATERIALS AND METHODS: The temporal artery tap maneuver was performed on 324 carotid arteries (163 patients). Ev ... Full text Link to item Cite

Hepatic artery: variability in measurement of resistive index and systolic acceleration time in healthy volunteers.

Journal Article Radiology · September 1996 PURPOSE: To determine the intrinsic sampling variability of measurements of hepatic artery resistive index and systolic acceleration time in healthy subjects and to estimate the components of variability attributable to the sonographer, individual measurem ... Full text Link to item Cite

Timing of parenchymal enhancement on dual-phase dynamic helical CT of the liver: how long does the hepatic arterial phase predominate?

Journal Article AJR Am J Roentgenol · June 1996 OBJECTIVE: Dual-phase dynamic helical CT is now being used to detect and characterize benign and malignant hypervascular lesions in the liver. The purpose of this study is to define the timing and degree of parenchymal enhancement of normal liver during th ... Full text Link to item Cite

CT during arterial portography: comparison of injection into the splenic versus superior mesenteric artery.

Journal Article Radiology · June 1996 PURPOSE: To determine whether the diagnostic quality of computed tomography (CT) during arterial portography (CTAP) performed via the splenic artery (SA) is better than that performed via the superior mesenteric artery (SMA). MATERIALS AND METHODS: The aut ... Full text Link to item Cite

CT evaluation of acute cholecystitis: findings and usefulness in diagnosis.

Journal Article AJR Am J Roentgenol · May 1996 OBJECTIVE: The purpose of our study was to describe the CT findings of acute cholecystitis and apply previously proposed CT criteria for its diagnosis. MATERIALS AND METHODS: We retrospectively reviewed CT scans of 29 patients with proven acute cholecystit ... Full text Link to item Cite

Can the US examination for lower extremity deep venous thrombosis be abbreviated? A prospective study of 755 examinations.

Journal Article Radiology · April 1996 PURPOSE: To determine if the ultrasound (US) survey of the lower extremity for deep venous thrombosis (DVT) can be curtailed without compromising diagnostic efficacy. MATERIALS AND METHODS: The authors performed 755 US examinations in 721 patients (1,024 l ... Full text Link to item Cite

Malignant melanoma metastatic to the gastrointestinal tract.

Journal Article AJR Am J Roentgenol · April 1996 Malignant melanoma, a common malignancy whose prevalence is increasing, represents 1-3% of cancers in the United States [1]. At autopsy, metastatic deposits to the gut are frequently found, but less than 9% of melanoma patients are diagnosed with gastroint ... Full text Link to item Cite

Use of time during body computed tomography scanning in a tertiary care teaching hospital: focus on patient throughput.

Journal Article Acad Radiol · March 1996 RATIONALE AND OBJECTIVES: To control costs, it is increasingly important to make efficient use of imaging technology. We sought to determine and analyze the time required to complete each step of a body computed tomography (CT) scan, focusing on factors th ... Full text Link to item Cite

Urinary bladder diverticula: sonographic diagnosis and interpretive pitfalls.

Journal Article J Ultrasound Med · March 1996 Diverticula of the urinary bladder can occasionally appear as complex pelvic masses not obviously connected to the bladder. Such presentations can lead to diagnostic confusion and interpretative error. Sonographic findings and clinical histories were revie ... Full text Link to item Cite

Ultrasonography.

Journal Article Radiology · February 1996 Full text Link to item Cite

Liver MR imaging: comparison of respiratory triggered fast spin echo with T2-weighted spin-echo and inversion recovery.

Journal Article Abdom Imaging · 1996 BACKGROUND: The purpose of this study was to compare a fast spin-echo sequence combined with a respiratory triggering device (R. trig. FSE) with conventional T2-weighted spin-echo (CSE) and inversion recovery (STIR) sequences for the detection of focal hep ... Full text Link to item Cite

Doppler sonography in the diagnosis of antepartum pyelonephritis: value of intrarenal resistive index measurements.

Journal Article J Ultrasound Med · January 1996 This study aims to define the effects of pyelonephritis on intrarenal resistive indices and to determine the role of Doppler sonography in the diagnosis of pyelonephritis in pregnant patients. Twenty pregnant women with pyelonephritis underwent renal Doppl ... Link to item Cite

Detection of deep venous thrombosis: prospective comparison of MR imaging and sonography.

Journal Article J Magn Reson Imaging · 1996 Seventy-five patients (41 women and 34 men, 20-85 years old) with clinically suspected deep venous thrombosis (DVT) were examined with MR imaging and sonography. In 26 patients, the final diagnosis was acute femoropopliteal DVT. The sensitivity of MR imagi ... Full text Link to item Cite

The diagnostic accuracy/efficacy of MRI in differentiating hepatic hemangiomas from metastatic colorectal/breast carcinoma: a multiple reader ROC analysis using a jackknife technique.

Journal Article J Comput Assist Tomogr · 1996 PURPOSE: Our purpose was to determine the diagnostic accuracy efficacy of a simple MR technique in differentiating hepatic hemangiomas from colorectal or breast metastases using a multiple reader method. METHOD: Thirty-seven cases with confirmed hepatic he ... Full text Link to item Cite

Color Doppler sonographic appearance of patent needle tracts after femoral arterial catheterization.

Journal Article Radiology · October 1995 PURPOSE: To determine the color Doppler sonographic characteristics and clinical relevance of persistent needle tracts after femoral arterial puncture. MATERIALS AND METHODS: After diagnostic (n = 18,825) or interventional (n = 8,489) cardiac catheterizati ... Full text Link to item Cite

Ultrasonographically guided manual compression of femoral artery injuries.

Journal Article J Ultrasound Med · September 1995 To determine the success and complication rates of ultrasonographically guided manual compression in patients with femoral arterial injuries after femoral arterial catheterization, we performed 53 sonographically guided compression repairs in 51 patients. ... Full text Link to item Cite

Color Doppler sonography of groin complications following femoral artery catheterization.

Journal Article AJR Am J Roentgenol · August 1995 Color Doppler sonography has proved to be an excellent technique for the evaluation of groin complications following femoral artery catheterization [1-4]. With the widespread use of fibrinolytic therapy, anticoagulants, and large-diameter vascular sheaths, ... Full text Link to item Cite

Gastrointestinal case of the day. Mirizzi syndrome.

Journal Article AJR Am J Roentgenol · July 1995 Full text Link to item Cite

Nodular sarcoidosis of the liver and spleen: analysis of 32 cases.

Journal Article Radiology · June 1995 PURPOSE: To describe the computed tomographic (CT) appearance of nodular hepatosplenic sarcoidosis and its association with stage with chest radiography and clinical status. MATERIALS AND METHODS: Thirty-two patients (21 women, 11 men; aged 25-68 years) wi ... Full text Link to item Cite

Ultrasonography.

Journal Article Radiology · February 1995 Full text Link to item Cite

Periprosthetic mycobacterial infection. CT and mammographic findings.

Journal Article Clin Imaging · 1995 Organisms of the Mycobacterium fortuitum complex are an uncommon but important cause of periprosthetic infection following augmentation mammoplasty or other breast surgery. This etiological agent must be considered in the particular case of periprosthetic ... Full text Link to item Cite

Sonographic appearance of oxidized cellulose (Surgicel): pitfall in the diagnosis of postoperative abscess.

Journal Article J Ultrasound Med · January 1995 Oxidized regenerated cellulose (Surgicel) is used for intraoperative hemostasis and frequently is left in the surgical bed. We describe the sonographic appearance of Surgicel, which may mimic an abscess in the postoperative setting. Sonograms from six post ... Full text Link to item Cite

CT of the liver in patients with metastatic breast carcinoma treated by chemotherapy: findings simulating cirrhosis.

Journal Article AJR Am J Roentgenol · December 1994 OBJECTIVE: Although the hepatotoxic effects of systemic chemotherapy are well known, CT findings in the liver after systemic chemotherapy have received little attention in the literature. In some patients with breast carcinoma metastatic to the liver who h ... Full text Link to item Cite

A radiologic syndrome after high dose chemotherapy and autologous bone marrow transplantation, with clinical and pathologic features of systemic candidiasis.

Journal Article Cancer · August 15, 1994 BACKGROUND: The use of high dose chemotherapy in the treatment of solid tumors is associated with prolonged neutropenia and, consequently, in some patients, systemic candidiasis. The authors describe their experience with a clinicoradiologic syndrome devel ... Full text Link to item Cite

Choroid plexus-ventricular wall separation in fetuses with normal-sized cerebral ventricles at sonography: postnatal outcome.

Journal Article AJR Am J Roentgenol · August 1994 OBJECTIVE: The choroid plexus typically fills the atrium of the lateral ventricles of the brain in normal fetuses, but separates from the medial ventricular wall with increasing ventriculomegaly. Sonographic depiction of choroid plexus-ventricular wall sep ... Full text Link to item Cite

Hepatic adenoma: MR characteristics and correlation with pathologic findings.

Journal Article AJR Am J Roentgenol · July 1994 OBJECTIVE: The purpose of this study was to describe the MR appearance of hepatic adenomas and correlate the MR imaging features with pathologic findings. MATERIALS AND METHODS: MR examinations were performed in 14 patients with 66 hepatic adenomas. The di ... Full text Link to item Cite

Diagnosis of acute cholecystitis with color Doppler sonography: significance of arterial flow in thickened gallbladder wall.

Journal Article AJR Am J Roentgenol · May 1994 OBJECTIVE: Thickening of the gallbladder wall is a common though nonspecific sonographic finding. The purpose of this study was to determine if color Doppler sonography shows arterial flow in thickened gallbladder walls more frequently in patients with cho ... Full text Link to item Cite

Bilateral lower extremity evaluation of deep venous thrombosis with color flow and compression sonography.

Journal Article J Ultrasound Med · February 1994 Recognition of the accuracy of CUS for diagnosis of DVT has led to increased requests for bilateral lower extremity CUS studies. Compared to unilateral lower limb CUS studies, these examinations are often requested when the clinical suspicion of DVT is les ... Full text Link to item Cite

Detection of focal hepatic masses: STIR MR vs. CT during arterial portography.

Journal Article J Comput Assist Tomogr · 1994 OBJECTIVE: Our goal was to compare short tau inversion recovery MRI (STIR) to CT during arterial portography (CTAP) in the detection of hepatic lesions. MATERIALS AND METHODS: Over a 24 month period, 40 patients evaluated for possible hepatic resection und ... Full text Link to item Cite

Hemostatic agent and concomitant abdominal abscess.

Journal Article AJR Am J Roentgenol · January 1994 Full text Link to item Cite

Cholelithoptysis and cholelithorrhea: rare complications of laparoscopic cholecystectomy.

Journal Article Gastroenterology · December 1993 Laparoscopic cholecystectomy is now considered a safe procedure for the management of cholelithiasis. During the procedure, stone spillage can occur and is usually not considered a serious complication. Clearance of stones can be laborious and is often avo ... Full text Link to item Cite

Technical failures in CT arterial portography.

Journal Article AJR Am J Roentgenol · July 1993 Full text Link to item Cite

MRI VERSUS ULTRASOUND - A RADIOLOGIC AND CLINICAL-EVALUATION OF DVT

Journal Article AMERICAN REVIEW OF RESPIRATORY DISEASE · April 1, 1993 Link to item Cite

Doppler US assessment of maternal kidneys: analysis of intrarenal resistivity indexes in normal pregnancy and physiologic pelvicaliectasis.

Journal Article Radiology · March 1993 Duplex ultrasound was performed in both kidneys of 156 normotensive pregnant women without suspected renal disease and 25 nonpregnant women of childbearing age to determine if resistivity indexes are different between pregnant and nonpregnant women and to ... Full text Link to item Cite

Appearance of oxidized cellulose (Surgicel) on postoperative CT scans: similarity to postoperative abscess.

Journal Article AJR Am J Roentgenol · February 1993 OBJECTIVE: Oxidized regenerated cellulose (Surgicel), a sterile knitted fabric that causes thrombus formation because of its physical properties, is frequently used for intraoperative hemostasis. Unlike traditional surgical sponges, it is bioabsorbable and ... Full text Link to item Cite

CT in the diagnosis of primary aldosteronism: sensitivity in 29 patients.

Journal Article AJR Am J Roentgenol · February 1993 OBJECTIVE: The most common cause of primary aldosteronism is a small aldosterone-secreting adrenal adenoma. With improvements in CT technology, smaller adrenal lesions can now be detected. We reviewed our experience with 29 patients with primary aldosteron ... Full text Link to item Cite

Focal fatty infiltration: a cause of nontumorous defects in the left hepatic lobe during CT arterial portography.

Journal Article J Comput Assist Tomogr · 1993 OBJECTIVE: The purpose of this work was to determine the frequency and significance of characteristic nontumorous low attenuation defects found in the left hepatic lobe during CT arterial portography (CTAP). MATERIALS AND METHODS: Eighty CTAPs performed ov ... Link to item Cite

Femoral artery pseudoaneurysms: value of color Doppler sonography in predicting which ones will thrombose without treatment.

Journal Article AJR Am J Roentgenol · November 1992 OBJECTIVE: The purpose of this study was to evaluate the Doppler imaging characteristics of femoral artery pseudoaneurysms occurring after cardiac catheterization to determine if color Doppler sonography can be used to predict which pseudoaneurysms would u ... Full text Link to item Cite

CT arterial portography: causes of technical failure and variable liver enhancement.

Journal Article AJR Am J Roentgenol · October 1992 OBJECTIVE: We studied the causes of technical failure and enhancement variability encountered during CT arterial portography. MATERIALS AND METHODS: CT arterial portograms and digital arteriograms were obtained via the superior mesenteric artery before par ... Full text Link to item Cite

Hyperechoic meconium in the third trimester fetus: an uncommon normal variant.

Journal Article J Ultrasound Med · December 1991 Fetal meconium is usually hypoechoic or isoechoic to adjacent abdominal structures on antenatal sonography. Hyperechoic meconium is associated with pathologic conditions, such as meconium ileus, meconium peritonitis, and anorectal malformations. The author ... Full text Link to item Cite

Metallic foreign bodies in the stomach: fluoroscopic removal with a magnetic orogastric tube.

Journal Article Radiology · January 1990 Thirty-six patients with 37 cases of metallic foreign bodies in the stomach were referred for fluoroscopic removal with a magnet coupled to an orogastric tube. Removal was successful in 34 of the cases. No complications occurred. No patient required hospit ... Full text Link to item Cite

Embolization of cardiac mural thrombus: complication of intraarterial fibrinolysis.

Journal Article Radiology · July 1988 A case of embolization of cardiac mural thrombus during intraarterial infusion of urokinase is reported. The mechanism of embolization is believed to be secondary to a systemic fibrinolytic effect induced by urokinase. ... Full text Link to item Cite

NORMAL CORONARIES - NORMAL PROGNOSIS

Journal Article JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY · January 1, 1985 Link to item Cite