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Proceedings Paper

Thermoacoustic computed tomography: limits to spatial resolution
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Paper Abstract

Numerical simulations are a valuable tool in the development of complex systems. They provide the ability to determine the effects of individual parameters on system functionality, and in the case of electronic systems, the ability to examine the system without the limitations introduced by electronic noise. The Thermoacoustic Computed Tomography (TACT) system under development was a natural candidate for numerical analysis. Early versions of the system exhibited exceptional promise, but final image quality was limited by a variety of confounding geometrical and electronic factors. The simulations described in this paper were used to generate the transducer signals that would theoretically be collected by the actual TACT imaging system when a sample was exposed to a pulse of electromagnetic radiation. The simulated data streams were then fed into the actual image reconstruction software to provide images of the 'virtual' phantoms. These images were analyzed and quantified to provide a measure of the system parameters responsible for the image blurs that limit system spatial resolution.

Paper Details

Date Published: 28 May 1999
PDF: 11 pages
Proc. SPIE 3659, Medical Imaging 1999: Physics of Medical Imaging, (28 May 1999); doi: 10.1117/12.349572
Show Author Affiliations
William L. Kiser Jr., Indiana Univ. Medical Ctr. and Purdue Univ. School of Health Sciences (United States)
Robert A. Kruger, Indiana Univ. Medical Ctr. and OptoSonics, Inc. (United States)

Published in SPIE Proceedings Vol. 3659:
Medical Imaging 1999: Physics of Medical Imaging
John M. Boone; James T. Dobbins III, Editor(s)

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