Time-domain reconstruction for thermoacoustic tomography in a spherical geometry

被引：402

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

页码：814 / 822

页数：9

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