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Proceedings Paper

Image reconstruction in thermoacoustic tomography with compensation for acoustic heterogeneities
Author(s): Mark A. Anastasio; Jin Zhang; Xiaochuan Pan
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Paper Abstract

Thermoacoustic tomography (TAT) is an emerging imaging technique with great potential for a wide range of biomedical imaging applications. It is customary in TAT to assume that the object is acoustically homogeneous, which can result in image artifacts in medical applications. In this work, we investigate an iterative reconstruction approach for TAT that can compensate for acoustic heterogeneities via inversion of a generalized Radon transform imaging model. We demonstrate numerically that the generalized Radon transform model can be inverted uniquely and stably by use of only half of the acquired measurement data. The effects of imperfect knowledge of the acoustic heterogeneity map are also investigated.

Paper Details

Date Published: 12 April 2005
PDF: 7 pages
Proc. SPIE 5750, Medical Imaging 2005: Ultrasonic Imaging and Signal Processing, (12 April 2005); doi: 10.1117/12.595866
Show Author Affiliations
Mark A. Anastasio, Illinois Institute of Technology (United States)
Jin Zhang, Illinois Institute of Technology (United States)
Xiaochuan Pan, The Univ. of Chicago (United States)


Published in SPIE Proceedings Vol. 5750:
Medical Imaging 2005: Ultrasonic Imaging and Signal Processing
William F. Walker; Stanislav Y. Emelianov, Editor(s)

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