8 April 1988 Intravascular Imaging With Ultrasound
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Proceedings Volume 0904, Microsensors and Catheter-Based Imaging Technology; (1988); doi: 10.1117/12.945239
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States
Abstract
One of the major unresolved problems in the development of laser angioplasty is in monitoring the process of plaque ablation in real-time to provide the necessary operator feedback. As part of a project to test the feasibility of intravascular imaging with ultrasound we have developed, constructed, and tested a 20 MHz transmitter/receiver which can detect echoes from transducers small enough to fit on a 3-F (1 mm diameter) catheter. Resolution with a small aperture (0.5 x 1.0 mm) focused transducer is about 0.25 mm in both axial and longitudinal directions at 1.5 to 6.0 mm from the transducer face. Images of arteries made in the laboratory with a simple rotational scanner have sufficient resolution to show lumen size and geometry, wall thickness, branches, and craters caused by laser ablation. From these initial studies intravascular ultrasonic imaging appears feasible.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Craig J Hartley, Michele P Sartori, Philip D Henry, "Intravascular Imaging With Ultrasound", Proc. SPIE 0904, Microsensors and Catheter-Based Imaging Technology, (8 April 1988); doi: 10.1117/12.945239; http://dx.doi.org/10.1117/12.945239
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KEYWORDS
Transducers

Crystals

Arteries

Ultrasonography

Image resolution

Imaging systems

Laser ablation

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