Search Results - william+walker

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Integrative Technique for Improved Signal-to-Noise Ratio in Medical Imaging Executive SummaryResearchers led by the University of Virginia’s William F. Walker, Ph.D., have developed an angular imaging system that improves the quality and diagnostic potential of medical imaging techniques. This novel technology uses translating apertures to acquire medical images with an improved signal-to-noise ratio (SNR) and, unlike... Published: 3/8/2012   |   Inventor(s): William Walker, Gregg Trahey, Michael Mccallister Keywords(s): Imaging Category(s): Imaging & Radiology

A Novel Spline-Based Algorithm for Multidimensional Displacement and Strain Estimation Researchers at the University of Virginia have developed a novel motion estimation algorithm based on a continuous representation of discrete-sample images, with accuracy better than one 100th of a sample. A novel strategy is employed to reduce computational cost and minimize memory requirements. In addition to rigid body motion, local stretching/compression... Published: 3/8/2012   |   Inventor(s): William Walker, Francesco Viola Keywords(s): Computer, Imaging, Software Category(s): Computer Software, Imaging & Radiology

Combined ECG-Echo for Cardiac Diagnosis The most common tool for cardiac screening and diagnosis, the electrocardiogram (ECG) is at best an indirect measure of cardiac dimensions. Specific dimensions of interest including chamber volumes, wall thickness and septal thickness can only be indirect assessed by ECG with overall poor predictive value for these measurements. Historically the ECG... Published: 3/8/2012   |   Inventor(s): Arthur Garson, William Walker, John Hossack, Travis Blalock Keywords(s): Devices, Medical Category(s): Medical Devices