Application of time reversal to thermoacoustic tomography
Reconstruction for thermoacoustic tomography in an arbitrary detection geometry is proposed by time-reversing the measured field back to the time when the thermoacoustic sources are excited. Time reversal of the field can be implemented efficiently by applying the delay-and-sum algorithm. The theoretical conclusions are supported by a numerical simulation of three-dimensional thermoacoustic tomography.
Additional Information© 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). We are grateful to Minhua Xu for useful discussion about this study. This project was sponsored in part by U.S. Army Medical Research and Materiel Command Grant No. DAMD17-00-1-0455, National Institutes of Health Grant No. R01 EB000712, and Texas Higher Education Coordinating Board Grant No. ARP 000512-0063-2001.
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