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Proceedings Paper

Microwave applicators for photoacoustic ultrasonagraphy
Author(s): Yuncai Fang; Robert A. Kruger; Pingyu Liu; C. Robert Appledorn
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Paper Abstract

This investigation describes the design and performance of two, water-immersed, microwave applicators (433 MHz) for use with photoacoustic ultrasonography (PAUS). A cylindrical, open-aperture waveguide was chosen because it could be integrated easily into our PAUS instrumentation. The microwave flux distributions for two microwave applicators were measured using a specially-constructed temperature probe, consisting of an optical fiber with a temperature-sensitive phosphor that was placed inside a thin, polyethylene tube filled with 0.5 M saline. Using this instrumentation, we mapped the microwave flux distribution for each applicator. The physical characteristics of these applicators are discussed.

Paper Details

Date Published: 11 April 1996
PDF: 10 pages
Proc. SPIE 2708, Medical Imaging 1996: Physics of Medical Imaging, (11 April 1996); doi: 10.1117/12.237828
Show Author Affiliations
Yuncai Fang
Robert A. Kruger, Indiana Univ. Medical Ctr. (United States)
Pingyu Liu, Indiana Univ. Medical Ctr. (United States)
C. Robert Appledorn, Indiana Univ. Medical Ctr. (United States)


Published in SPIE Proceedings Vol. 2708:
Medical Imaging 1996: Physics of Medical Imaging
Richard L. Van Metter; Jacob Beutel, Editor(s)

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