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Proceedings Paper

Factors Influencing Ultrasound Echoes From Arterial Walls
Author(s): Jim Griffith; Mario Maciel; Paul Zalesky
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Paper Abstract

Significant progress in methods for the treatment of arterial disease has been made during the past several years. The trend towards least invasive therapies has led to an increasing need for instruments which quantify arterial disease status before, during, and after an intervention or treatment. Such instruments should provide safer and more effective disease treatment by providing the physician with a procedure guidance tool. The use of miniature ultrasound transducers, mounted at the distal end of a vascular catheter or probe, offers a promising method for producing images and quantitative measure-ment of arterial lumen and wall thickness. Several approaches have been suggested for placing the transducers in a probe configuration which is then mounted in a catheter and advanced to the vascular site of interest for image generation. The "best" probe configuration is defined by the specific questions of interest to the physician. It also depends upon transducer characteristics and how the sound beam "interacts" with the arterial wall. Imaging the small diameter coronary arteries, in particular, requires careful consideration of various transducer-tissue parameters. Transducer signal-to-noise ratio will likely be a critical parameter for systems designed to image healthy and diseased coronary arteries. The reported study shows how arterial wall echo amplitude changes as the angle between sound beam and wall varies. Changes are measured under carefully defined laboratory conditions.

Paper Details

Date Published: 8 April 1988
PDF: 3 pages
Proc. SPIE 0904, Microsensors and Catheter-Based Imaging Technology, (8 April 1988); doi: 10.1117/12.945238
Show Author Affiliations
Jim Griffith, InterTherapy, Inc. (United States)
Mario Maciel, InterTherapy, Inc. (United States)
Paul Zalesky, InterTherapy, Inc. (United States)

Published in SPIE Proceedings Vol. 0904:
Microsensors and Catheter-Based Imaging Technology
Alan I. West, Editor(s)

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