Ultrasonics

• 

  Subject Areas on Research

  • 2-D motion estimation using two parallel receive beams. 
  • A hermetically sealed cardiac dimension transducer for long-term animal implantation. 
  • A heterogeneous nonlinear attenuating full-wave model of ultrasound. 
  • A method for direct localized sound speed estimates using registered virtual detectors. 
  • A novel method for angle independent ultrasonic imaging of blood flow and tissue motion. 
  • A prospective randomized comparison of single- and double-lumen needles for transvaginal follicular aspiration. 
  • A real time system for quantifying and displaying two-dimensional velocities using ultrasound. 
  • A rheological study of packed red blood cell suspensions with an oscillating ball microrheometer. 
  • Abdominal and obstetric applications of a dynamically focused phased array real time ultrasound system. 
  • Accuracy of left ventricular end-diastolic dimension determinations obtained by radionuclide angiocardiography. 
  • Acoustic and mechanical properties of renal calculi: implications in shock wave lithotripsy. 
  • Acoustic radiation force elasticity imaging in diagnostic ultrasound. 
  • Activation of transgene expression in skeletal muscle by focused ultrasound. 
  • Acupuncture sensation during ultrasound guided acupuncture needling. 
  • Alterations in the blood velocity profile influence the blood flow response during muscle contractions and relaxations. 
  • Altered ultrasonic vocalization and impaired learning and memory in Angelman syndrome mouse model with a large maternal deletion from Ube3a to Gabrb3. 
  • Analysis and modeling of an ultrasound-modulated guide star to increase the depth of focusing in a turbid medium. 
  • Analysis of contrast in images generated with transient acoustic radiation force. 
  • Angular response of miniature ultrasonic hydrophones. 
  • Arterial blood flow of all abdominal-pelvic organs using Doppler ultrasound: range, variability and physiological impact. 
  • Bayesian speckle tracking. Part I: an implementable perturbation to the likelihood function for ultrasound displacement estimation. 
  • Bayesian speckle tracking. Part II: biased ultrasound displacement estimation. 
  • Beam steering with linear arrays. 
  • BegoStone--a new stone phantom for shock wave lithotripsy research. 
  • Cell membrane deformation and bioeffects produced by tandem bubble-induced jetting flow. 
  • Color flow and image-directed Doppler ultrasound evaluation of iatrogenic arteriovenous fistulas in the groin. 
  • Comparison of M-mode and two-dimensional echocardiography. 
  • Comparison of multigated radionuclide angiography with ultrasonic sonomicrometry over a wide range of ventricular function in the conscious dog. 
  • Comparison of pulsed Doppler sonography and angiography in patients with portal hypertension. 
  • Compound scanning with a phased array. 
  • Continuous wave Doppler ultrasonographic quantitation of patent ductus arteriosus flow. 
  • Contrast echocardiography: influence of ultrasonic machine settings, mixing conditions, and pressurization on pixel intensity and microsphere size of Albunex solutions in vitro. 
  • Corneal wound architecture and integrity after torsional and mixed phacoemulsification: evaluation of standard and microincisional coaxial techniques. 
  • Correlation of follicular diameter with oocyte recovery and maturity at the time of transvaginal follicular aspiration. 
  • Cyclosporin A-related cerebral vasculopathy. 
  • Diagnosis of acute cholecystitis with color Doppler sonography: significance of arterial flow in thickened gallbladder wall. 
  • Diffusion model for ultrasound-modulated light. 
  • Doppler US assessment of maternal kidneys: analysis of intrarenal resistivity indexes in normal pregnancy and physiologic pelvicaliectasis. 
  • Doppler evaluation of renal artery stenosis: interobserver agreement in the interpretation of waveform morphology. 
  • Dynamics of the helix--coil transition in poly-L-ornithine. 
  • Edge targeting reduces the number of shock waves required for biliary ESWL in vitro. 
  • Editorial: Convection-enhanced delivery. 
  • Efficient gene delivery to pancreatic islets with ultrasonic microbubble destruction technology. 
  • Elastography Assessment of Liver Fibrosis: Society of Radiologists in Ultrasound Consensus Conference Statement. 
  • Eliciting and Analyzing Male Mouse Ultrasonic Vocalization (USV) Songs. 
  • Enhanced gene expression of systemically administered plasmid DNA in the liver with therapeutic ultrasound and microbubbles. 
  • Estimates of echo correlation and measurement bias in acoustic radiation force impulse imaging. 
  • Evaluation of synthetic phospholipid ultrasound contrast agents. 
  • Experimental basis for intraoperative calculus localization by ultrasound. 
  • Extraction of intramyocardial foreign body utilizing operative ultrasonography. 
  • Femoral artery pseudoaneurysms: value of color Doppler sonography in predicting which ones will thrombose without treatment. 
  • Free of speckle ultrasound images of small tissue structures. 
  • Frequency compounding for speckle contrast reduction in phased array images. 
  • Implantable, polymeric systems for modulated drug delivery. 
  • In vitro color flow, pulsed and continuous wave Doppler ultrasound masking of flow by prosthetic valves. 
  • In vivo measurements of ultrasonic beam distortion in the breast. 
  • In vivo photoacoustic microscopy with 7.6-µm axial resolution using a commercial 125-MHz ultrasonic transducer. 
  • Influence of denaturing agents on solvent structure. 
  • Intracorneal lesions produced with focused ultrasound. 
  • Low-amplitude ultrasound enhances hydrodynamic-based gene delivery to rat kidney. 
  • Measurement of biaxial mechanical properties of soft tubes and arteries using piezoelectric elements and sonometry. 
  • Methods and value of pulsatile blood flow measurements in man. 
  • Microemulsions of cholesteryl oleate and dimyristoylphosphatidylcholine: a model for cholesteryl ester rich very low density lipoproteins. 
  • Mild fetal renal pelviectasis. Differentiation from hilar vascularity using color Doppler sonography. 
  • Mouse model of Timothy syndrome recapitulates triad of autistic traits. 
  • Nonuniformity of fetal umbilical systolic/diastolic ratios as determined with duplex Doppler sonography. 
  • On the thermal effects associated with radiation force imaging of soft tissue. 
  • Optical tracking of acoustic radiation force impulse-induced dynamics in a tissue-mimicking phantom. 
  • Phase aberration correction in medical ultrasound using speckle brightness as a quality factor. 
  • Phase aberration correction using echo signals from moving targets. I: Description and theory. 
  • Phase aberration correction using echo signals from moving targets. II: Experimental system and results. 
  • Phased array ultrasound imaging through planar tissue layers. 
  • Potential and limitations of angle-independent flow detection algorithms using radio-frequency and detected echo signals. 
  • Predictive value of access blood flow in detecting access thrombosis. 
  • Principles and applications of a dynamically focused phased array real time ultrasound system. 
  • Pulsed Doppler spectral analysis of bounded fluid jets. 
  • Quantitation of renal blood flow by contrast ultrasonography: preliminary results. 
  • Quantitative effects of respiration on venous return during single knee extension-flexion. 
  • Real-time sonoelastography of hepatic thermal lesions in a swine model. 
  • Reduction of tissue injury in shock-wave lithotripsy by using an acoustic diode. 
  • Refraction correction in 3D transcranial ultrasound imaging. 
  • Relaxation spectrometry of biological systems. 
  • Release of endogenous danger signals from HIFU-treated tumor cells and their stimulatory effects on APCs. 
  • Renal artery stenosis: analysis of Doppler waveform parameters and tardus-parvus pattern. 
  • Revision arthroplasty facilitated by ultrasonic tool cement removal. An evaluation of whole bone strength in a canine model. 
  • Sensitivity and specificity of the thermodilution technique in detection of access recirculation. 
  • Shock wave interaction with laser-generated single bubbles. 
  • Single-dose captopril scintigraphy in the neonate with renovascular hypertension: prediction of renal failure, a side effect of captopril therapy. 
  • Sonomicrometric determination of ischemic contracture of the left ventricle. 
  • Sources of image degradation in fundamental and harmonic ultrasound imaging using nonlinear, full-wave simulations. 
  • Speckle coherence and implications for adaptive imaging. 
  • Studies on photosystem I. I. Relationship of plastocyanin, cytochrome f and P700. 
  • Suppression of large intraluminal bubble expansion in shock wave lithotripsy without compromising stone comminution: methodology and in vitro experiments. 
  • Surgical atrial fibrillation ablation: a review of contemporary techniques and energy sources. 
  • Surrogate markers for late cardiac allograft survival. 
  • The 'Doppler-swoosh' test: a further modification to the 'swoosh' test. 
  • The development and potential of acoustic radiation force impulse (ARFI) imaging for carotid artery plaque characterization. 
  • The direct estimation of sound speed using pulse-echo ultrasound. 
  • The effect of surface agitation on ultrasound-mediated gene transfer in vitro. 
  • The impact of physiological motion on tissue tracking during radiation force imaging. 
  • The impact of sound speed errors on medical ultrasound imaging. 
  • The role of cavitation in acoustically activated drug delivery. 
  • Thermal safety of vibro-acoustography using a confocal transducer. 
  • ULTRASONIC ATTENUATION MEASUREMENTS IN POLY-L-GLUAMIC ACID SOLUTIONS. 
  • Ultrafast 1D MR thermometry using phase or frequency mapping. 
  • Ultrasonic absorption measurements in aqueous solutions of glycine, diglycine, and triglycine. 
  • Ultrasonic attenuation measurements in phospholipid dispersions. 
  • Ultrasonic disruption of the blood-brain barrier enables in vivo functional mapping of the mouse barrel field cortex with manganese-enhanced MRI. 
  • Ultrasonic vocalization behavior differs between lines of ethanol-preferring and nonpreferring rats. 
  • Ultrasound as the first choice for peripheral nerve imaging? 
  • Ultrasound bioeffects and regulatory issues: an introduction for the echocardiographer. 
  • Ultrasound-mediated drug delivery. 
  • Validation of haemodialysis recirculation and access blood flow measured by thermodilution. 
  • Waveguide invariant broadband target detection and reverberation estimation. 
• 

  Keywords of People

  • Chen, Nan-kuei, Adjunct Associate Professor in the Department of Radiology, Radiology
  • Johnson, G. Allan, Charles E. Putman University Distinguished Professor of Radiology, Physics
  • Nightingale, Kathryn Radabaugh, Theo Pilkington Distinguished Professor of Biomedical Engineering, Biomedical Engineering
  • Preminger, Glenn Michael, James F. Glenn, M.D. Distinguished Professor of Urology, Surgery
  • Sullivan, Daniel Carl, Professor Emeritus of Radiology, Radiology
  • Zhong, Pei, Professor in the Department of Mechanical Enginnering and Materials Science, Mechanical Engineering and Materials Science