Time-domain reconstruction for thermoacoustic tomography in a spherical geometry

被引：393
|
作者：
Xu, MH [1 ]
Wang, LHV [1 ]
机构：
[1] Texas A&M Univ, Opt Imaging Lab, Dept Biomed Engn, College Stn, TX 77843 USA
来源：
IEEE TRANSACTIONS ON MEDICAL IMAGING | 2002年 / 21卷 / 07期
关键词：
microwave; reconstruction; thermoacoustic; tomography;
D O I：
10.1109/TMI.2002.801176
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Reconstruction-based microwave-induced thermoacoustic tomography in a spherical configuration is presented. Thermoacoustic waves from biological tissue samples excited by microwave pulses are measured by a wide-band unfocused ultrasonic transducer, which is set on a spherical surface enclosing the sample. Sufficient data are acquired from different directions to reconstruct the microwave absorption distribution. An exact reconstruction solution is derived and approximated to a modified backprojection algorithm. Experiments demonstrate that the reconstructed images agree well with the original samples. The spatial resolution of the system reaches 0.5 mm.
引用
收藏
页码：814 / 822
页数：9
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