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Proceedings Paper

Experimental characterization of a SonoKnife applicator
Author(s): Rongmin Xia; Duo Chen; Gal Shafirstein; Xin Chen; Peter Corry; Robert Griffin; Eduardo G. Moros
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Paper Abstract

The SonoKnife is a scan-able high intensity line-focused ultrasound device for thermal ablation (52 - 60°C) of superficially located advanced tumors or nodal disease in the head and neck. Based on preliminary simulation results, a prototype cylindrical section transducer operating at 3.5 MHz, with a 60 mm radius of curvature, an elevation of 30 mm and an aperture of 60 mm, was constructed for laboratory testing. The three-dimensional distribution of the acoustic field was measured in water and compared to preliminary numerical results. Ablation experiments were performed in gel phantoms, in porcine liver ex vivo and in live piglets. The experimental results agreed well with the theoretical simulations and showed that the SonoKnife transducer had a narrow acoustic edge and is able to ablate living biological tissues at practical power levels.

Paper Details

Date Published: 23 February 2011
PDF: 8 pages
Proc. SPIE 7901, Energy-based Treatment of Tissue and Assessment VI, 79010Q (23 February 2011); doi: 10.1117/12.876379
Show Author Affiliations
Rongmin Xia, Univ. of Arkansas for Medical Sciences (United States)
Duo Chen, Univ. of Arkansas for Medical Sciences (United States)
Gal Shafirstein, Univ. of Arkansas for Medical Sciences (United States)
Xin Chen, Univ. of Arkansas for Medical Sciences (United States)
Peter Corry, Univ. of Arkansas for Medical Sciences (United States)
Robert Griffin, Univ. of Arkansas for Medical Sciences (United States)
Eduardo G. Moros, Univ. of Arkansas for Medical Sciences (United States)


Published in SPIE Proceedings Vol. 7901:
Energy-based Treatment of Tissue and Assessment VI
Thomas P. Ryan, Editor(s)

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