Factors Influencing Ultrasound Echoes From Arterial Walls

Jim Griffith; Mario Maciel; Paul Zalesky

doi:10.1117/12.945238

8 April 1988 Factors Influencing Ultrasound Echoes From Arterial Walls

Jim Griffith, Mario Maciel, Paul Zalesky

Proceedings Volume 0904, Microsensors and Catheter-Based Imaging Technology; (1988) https://doi.org/10.1117/12.945238
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

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.

Citation Download Citation

Jim Griffith, Mario Maciel, and Paul Zalesky "Factors Influencing Ultrasound Echoes From Arterial Walls", Proc. SPIE 0904, Microsensors and Catheter-Based Imaging Technology, (8 April 1988); https://doi.org/10.1117/12.945238

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