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Proceedings Paper

Shielding for thermoacoustic tomography with RF excitation
Author(s): M. Mitchell; G. Becker; P. Dey; J. Generotzky; S. K. Patch
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Paper Abstract

Radiofrequency (RF) pulses used to generate thermoacoustic computerized tomography (TCT) signal couple directly into the pulser-receiver and oscilloscope, swamping true TCT signal. We use a standard RF enclosure housing both RF amplifier and object being imaged. This is similar to RF shielding of magnetic resonance imaging (MRI) suites and protects electronics outside from stray RF. Unlike MRI, TCT receivers are ultrasound transducers, which must also be shielded from RF. A transducer housing that simultaneously shields RF and permits acoustic transmission was developed specifically for TCT. We compare TCT signals measured with and without RF shielding.

Paper Details

Date Published: 11 March 2008
PDF: 4 pages
Proc. SPIE 6856, Photons Plus Ultrasound: Imaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics, 68560X (11 March 2008); doi: 10.1117/12.763070
Show Author Affiliations
M. Mitchell, Univ. of Wisconsin-Milwaukee (United States)
G. Becker, Univ. of Wisconsin-Milwaukee (United States)
P. Dey, Univ. of Wisconsin-Milwaukee (United States)
J. Generotzky, Univ. of Wisconsin-Milwaukee (United States)
S. K. Patch, Univ. of Wisconsin-Milwaukee (United States)


Published in SPIE Proceedings Vol. 6856:
Photons Plus Ultrasound: Imaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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