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A Transducer with Inversion Layer Technique for Expanded Lesion Size in HIFU Surgery

Authors:
Jin Ho Sung
Da Sol Kwon
Eun Young Jeong
Jong Seob Jeong

Keywords: finite element analysis; dual-concentric HIFU transducer; high intensity focused ultrasound; inversion layer; phase inversion

Abstract:
In High Intensity Focused Ultrasound (HIFU) surgery, benign or malignant tumors can be treated through the thermal and mechanical effects of the focused ultrasound. However, the overall HIFU treatment time is relatively long compared with the open surgery because the irradiation area of the ultrasound beam is very small. In this paper, we present a dual-concentric HIFU transducer with inversion layer technique to extend the focal region in the axial direction. The performance of the proposed technique was demonstrated by Finite Element Analysis (FEA) simulation, and the lesion size was increased by 97% compared with the conventional single element transducer based on the extended -6 dB Depth of Focus (DOF). Therefore, the proposed HIFU transducer can be one of the useful ways to shorten the total treatment time of the HIFU surgery.

Pages: 106 to 107

Copyright: Copyright (c) IARIA, 2018

Publication date: September 16, 2018

Published in: conference

ISSN: 2308-3514

ISBN: 978-1-61208-660-6

Location: Venice, Italy

Dates: from September 16, 2018 to September 20, 2018