Ultrasound detection of cavitation as a phenomenon common to intervention devices causing tissue ablation

David S. Bach; William F. Armstrong; Raimund Erbel; Stephen G. Ellis; Joao Sousa; Uri Rosenschein

doi:10.1117/12.137317

28 August 1992 Ultrasound detection of cavitation as a phenomenon common to intervention devices causing tissue ablation

David S. Bach, William F. Armstrong, Raimund Erbel, Stephen G. Ellis, Joao Sousa, Uri Rosenschein

Author Affiliations +

Proceedings Volume 1642, Diagnostic and Therapeutic Cardiovascular Interventions II; (1992) https://doi.org/10.1117/12.137317
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Cavitation previously has been observed in association with ultrasonic angioplasty and high- frequency rotational atherectomy. This study evaluates the production of cavitation accompanying the use of several catheter-based devices under development or in current use in the practice of interventional cardiology. Catheters were examined in an in vitro model, and cavitation was evaluated using standard ultrasound imaging equipment. Cavitation was detected with each of the devices that effects tissue ablation, but not tissue resection. Devices produced characteristic patterns of cavitation dependent on the mode of energy release of the device. The size, but not the intensity, of the cavitation effect was proportional to the energy output of the devices. The precise role of cavitation in the mechanism of tissue ablation remains uncertain.

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David S. Bach, William F. Armstrong, Raimund Erbel, Stephen G. Ellis, Joao Sousa, and Uri Rosenschein "Ultrasound detection of cavitation as a phenomenon common to intervention devices causing tissue ablation", Proc. SPIE 1642, Diagnostic and Therapeutic Cardiovascular Interventions II, (28 August 1992); https://doi.org/10.1117/12.137317

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