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Title: Optimization of operating frequency of acoustic transducers for obtaining maximum temperature in HIFU based therapeutic ablation
Authors: Bozkurt A.
Roy R. B.
Ergun S.
Issue Date: 2012
Source: 2012 IEEE International Ultrasonics Symposium, IUS 2012, 7 October 2012 through 10 October 2012, Dresden, 98534
Abstract: High intensity Focus Ultrasound therapy relies on acoustic power absorbed by tissue. Acoustic absorption is a function of frequency: while a relatively lower frequency allows the beam to propagate farther in the tissue, the absorption, and, hence, the heat generated at the focal point is poor. At higher frequencies, on the other hand, tissue at the focal point is capable of absorbing most of the incoming acoustic energy, but loss along the propagation path significantly reduces the strength of the received signal. One figure of merit for finding the optimal frequency is the spatial peak of the acoustic power absorption density. In this paper, we analyze the same problem with the figure of merit taken as the peak temperature at the focal point and show that this may lead to a different frequency at which this value is maximized. © 2012 IEEE.
ISBN: 9781467345613
ISSN: 1948-5719
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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