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Published July 2002 | Published
Journal Article Open

Exact frequency-domain reconstruction for thermoacoustic tomography. II. Cylindrical geometry


For pt. I see ibid., vol. 21, no. 7, p. 823-8 (2002). Microwave-induced thermoacoustic tomography (TAT) in a cylindrical configuration is developed to image biological tissue. Thermoacoustic signals are acquired by scanning a flat ultrasonic transducer. Using a new expansion of a spherical wave in cylindrical coordinates, we apply the Fourier and Hankel transforms to TAT and obtain an exact frequency-domain reconstruction method. The effect of discrete spatial sampling on image quality is analyzed. An aliasing-proof reconstruction method is proposed. Numerical and experimental results are included.

Additional Information

© 2002 IEEE. Manuscript received July 30, 2001 revised May 13, 2002. This work was supported in part by the U.S. Army Medical Research and Material Command under Grant DAMD17-00-1-0455, in part by the National Institutes of Health (NIH) under Grant R01 CA71980 and Grant R21 CA83760, in part by the National Science Foundation (NSF) under Grant BES-9734491, and in part by the Texas Higher Education Coordinating Board under Grant ARP 000512-0123-1999.

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