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Chu Wang

Assistant Professor in Radiology
Radiology
409 Elf Street, Box 3155 DUHS, Durham, NC 27710
409 Elf Street, Box 3155 DUHS, Durham, NC 27710

Selected Publications


Estimating radiation exposure during paediatric cardiac catheterisation: a potential for radiation reduction with air gap technique.

Journal Article Cardiol Young · December 2019 INTRODUCTION: The air gap technique (AGT) is an approach to radiation dose optimisation during fluoroscopy where an "air gap" is used in place of an anti-scatter grid to reduce scatter irradiation. The AGT is effective in adults but remains largely unteste ... Full text Link to item Cite

Comparison of Radiation Exposure from Fixed Table Fluoroscopy to a Portable C-Arm During Ureteroscopy.

Journal Article J Endourol · September 2017 INTRODUCTION: Current treatment practices within the field of endourology require the routine use of radiation exposure to provide adequate imaging during urologic procedures. One such procedure requiring repeated radiation exposure during treatment is ure ... Full text Link to item Cite

Impact of imaging approach on radiation dose and associated cancer risk in children undergoing cardiac catheterization.

Journal Article Catheter Cardiovasc Interv · April 2017 OBJECTIVES: To quantify the impact of image optimization on absorbed radiation dose and associated risk in children undergoing cardiac catheterization. BACKGROUND: Various imaging and fluoroscopy system technical parameters including camera magnification, ... Full text Link to item Cite

Radiation Dosimetry for Ureteroscopy Patients: A Phantom Study Comparing the Standard and Obese Patient Models.

Journal Article J Endourol · January 2016 PURPOSE: To determine the effect of obesity on radiation exposure during simulated ureteroscopy. METHODS: A validated anthropomorphic adult male phantom with a body mass index (BMI) of approximately 24 kg/m(2), was positioned to simulate ureteroscopy. Padd ... Full text Link to item Cite

Characterization of MOSFET Dosimeter Angular Response Using a Spherical Phantom for Fluoroscopic Dosimetry.

Journal Article Health Phys · January 2016 Metal-Oxide Semiconductor Field-Effect Transistor (MOSFET) dosimeters, placed in anthropomorphic phantoms, are a standard method for organ dosimetry in medical x-ray imaging applications. However, many x-ray applications, particularly fluoroscopy procedure ... Full text Link to item Cite

Radiation Exposure during the Evaluation and Management of Nephrolithiasis.

Journal Article J Urol · October 2015 PURPOSE: There is rising concern over the increasing amount of patient radiation exposure from diagnostic imaging and medical procedures. Patients with nephrolithiasis are at potentially significant risk for radiation exposure due to the need for imaging t ... Full text Link to item Cite

Verification of a novel method for tube voltage constancy measurement of orthovoltage x-ray irradiators.

Journal Article Med Phys · August 2014 PURPOSE: For orthovoltage x-ray irradiators, the tube voltage is one of the most fundamental system parameters as this directly relates to the dosimetry in radiation biology studies; however, to the best of our knowledge, there is no commercial portable qu ... Full text Link to item Cite

SU-C-18C-04: Evaluation of Effective Dose During Ureteroscopy for Obese and Non-Obese Patients.

Journal Article Med Phys · June 2014 PURPOSE: Ureteroscopy involves fluoroscopy which potentially results in considerable amount of radiation dose to the patient. Purpose of this study was two-fold: (a) to develop the effective dose computational model for obese and non-obese patients undergo ... Full text Link to item Cite

Evaluation of patient effective dose of neurovascular imaging protocols for C-arm cone-beam CT.

Journal Article AJR. American journal of roentgenology · May 2014 ObjectiveThe purpose of this study was threefold: to estimate the organ doses and effective doses (EDs) for seven neurovascular imaging protocols, to study the effect of beam collimation on ED, and to derive protocol-specific dose-area product (DA ... Full text Cite

Toward an organ based dose prescription method for the improved accuracy of murine dose in orthovoltage x-ray irradiators.

Journal Article Med Phys · March 2014 PURPOSE: Accurate dosimetry is essential when irradiating mice to ensure that functional and molecular endpoints are well understood for the radiation dose delivered. Conventional methods of prescribing dose in mice involve the use of a single dose rate me ... Full text Link to item Cite

Digital tomosynthesis: a new technique for imaging nephrolithiasis. Specific organ doses and effective doses compared with renal stone protocol noncontrast computed tomography.

Journal Article Urology · February 2014 OBJECTIVE: To determine organ-specific doses (ODs) and effective dose (ED) for digital tomosynthesis (DT) and compare it with our institutional renal stone protocol noncontrast computed tomography (NCCT). METHODS: A validated anthropomorphic male phantom w ... Full text Link to item Cite

Radiation exposure in urology: a genitourinary catalogue for diagnostic imaging.

Journal Article J Urol · December 2013 PURPOSE: Computerized tomography use increased exponentially in the last 3 decades, and it is commonly used to evaluate many urological conditions. Ionizing radiation exposure from medical imaging is linked to the risk of malignancy. We measured the organ ... Full text Link to item Cite

Estimation of radiation exposure for brain perfusion CT: standard protocol compared with deviations in protocol.

Journal Article AJR Am J Roentgenol · November 2013 OBJECTIVE: The purpose of this study was to measure the organ doses and estimate the effective dose for the standard brain perfusion CT protocol and erroneous protocols. MATERIALS AND METHODS: An anthropomorphic phantom with metal oxide semiconductor field ... Full text Link to item Cite

Radiation exposure in the follow-up of patients with urolithiasis comparing digital tomosynthesis, non-contrast CT, standard KUB, and IVU.

Journal Article J Endourol · October 2013 OBJECTIVE: To compare the effective doses (EDs) associated with imaging modalities for follow-up of patients with urolithiasis, including stone protocol non-contrast computed tomography (NCCT), kidney, ureter, and bladder radiograph (KUB), intravenous urog ... Full text Link to item Cite

Obesity triples the radiation dose of stone protocol computerized tomography.

Journal Article J Urol · June 2013 PURPOSE: Patients with recurrent nephrolithiasis are often evaluated and followed with computerized tomography. Obesity is a risk factor for nephrolithiasis. We evaluated the radiation dose of computerized tomography in obese and nonobese adults. MATERIALS ... Full text Link to item Cite

SU-E-I-07: Proposal for a Novel Algorithm of Effective Dose Evaluation for Medical Radiation Exposure.

Journal Article Med Phys · June 2012 PURPOSE: The validity of effective dose (ED) in medical applications, which mostly involving partial-organ irradiation, has long been argued. We now propose a new algorithm of effective dose evaluation for medical radiation exposure. The new algorithm will ... Full text Link to item Cite

SU-D-217BCD-06: Evaluation of Effective Dose during Neuro 3-D Imaging Using a C-Arm Cone-Beam CT System.

Journal Article Med Phys · June 2012 PURPOSE: The purpose of this study was three-fold: 1) to estimate the organ doses and effective dose (ED) for patients undergoing neuro 3D-imaging protocols, 2) to study the effect of beam collimation on ED, and 3) to derive protocol-specific DAP-to-ED con ... Full text Link to item Cite

Neutrons do not produce a bystander effect in zebrafish irradiated in vivo.

Journal Article International journal of radiation biology · September 2011 PurposeNeutron irradiations at the McMaster Tandetron Accelerator were performed to study direct and bystander effects of neutrons in a live organism.MethodsThe neutrons were produced through (7)Li(p,n)(7)Be reaction. Although the gamma c ... Full text Cite