期刊
IEEE TRANSACTIONS ON MEDICAL IMAGING
卷 21, 期 7, 页码 829-833出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMI.2002.801171
关键词
cylindrical; frequency-domain reconstruction; thermoacoustic tomography
类别
资金
- NCI NIH HHS [R01 CA71980, R21 CA83760] Funding Source: Medline
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.
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