Microwave applicators for photoacoustic ultrasonagraphy

Yuncai Fang; Robert A. Kruger; Pingyu Liu; C. Robert Appledorn

doi:10.1117/12.237828

11 April 1996 Microwave applicators for photoacoustic ultrasonagraphy

Yuncai Fang, Robert A. Kruger, Pingyu Liu, C. Robert Appledorn

Proceedings Volume 2708, Medical Imaging 1996: Physics of Medical Imaging; (1996) https://doi.org/10.1117/12.237828
Event: Medical Imaging 1996, 1996, Newport Beach, CA, United States

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.

Citation Download Citation

Yuncai Fang, Robert A. Kruger, Pingyu Liu, and C. Robert Appledorn "Microwave applicators for photoacoustic ultrasonagraphy", Proc. SPIE 2708, Medical Imaging 1996: Physics of Medical Imaging, (11 April 1996); https://doi.org/10.1117/12.237828

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