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Proceedings Paper

Self-guided ultrasound phased arrays for noninvasive surgery
Author(s): Emad S. Ebbini
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Paper Abstract

A dual-mode high-power ultrasound phased array with imaging capability to allow for self-guidance in noninvasive thermal surgery is described. Criteria governing the design of such dual-mode arrays to allow for high therapeutic effciency and adequate image contrast in the target volume are given. Experimental results for characterization of the array in both the imaging and therapy modes are given. Having established the dual-mode capabilities of this array, we have recently conducted a series of experiments in forming discrete and volumetric lesions in freshly excised tissue samples. Experimental results demonstrating the feasibility of visualizing the lesion formation process are presented. Images formed before and after discrete lesion formation have consistently shown increased level of echogenicity at the lesion location. Similar results were obtained for volumetric lesions. These results show that the spatial mapping of the lesion size and shape based ultrasound images obtained using the therapeutic array is feasible.

Paper Details

Date Published: 1 June 2001
PDF: 11 pages
Proc. SPIE 4247, Thermal Treatment of Tissue: Energy Delivery and Assessment, (1 June 2001); doi: 10.1117/12.427867
Show Author Affiliations
Emad S. Ebbini, Univ. of Minnesota/Twin Cities (United States)

Published in SPIE Proceedings Vol. 4247:
Thermal Treatment of Tissue: Energy Delivery and Assessment
Thomas P. Ryan, Editor(s)

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