Exact frequency-domain reconstruction for thermoacoustic tomography. I. Planar geometry
Tóm tắt
We report an exact and fast Fourier-domain reconstruction algorithm for thermoacoustic tomography in a planar configuration assuming thermal confinement and constant acoustic speed. The effects of the finite size of the detector and the finite length of the excitation pulse are explicitly included in the reconstruction algorithm. The algorithm is numerically and experimentally verified. We also demonstrate that the blurring caused by the finite size of the detector surface is the primary limiting factor on the resolution and that it can be compensated for by deconvolution.
Từ khóa
#Geometry #Image reconstruction #Tomography #Detectors #Reconstruction algorithms #Surface reconstruction #Ultrasonic imaging #Optical imaging #Fourier transforms #Spatial resolutionTài liệu tham khảo
10.1002/(SICI)1099-1506(199611/12)3:6<513::AID-NLA93>3.0.CO;2-4
10.1063/1.372127
10.1118/1.1380436
10.1109/ULTSYM.1981.197738
10.1109/TMTT.1984.1132782
10.1118/1.598688
10.1063/1.1149986
10.1118/1.598984
10.1118/1.1333409
10.1109/TMI.2002.801176
10.1109/TMI.2002.801171
10.1126/science.250.4977.101
larsen, 1986, Medical Applications of Microwave Imaging
10.1118/1.1418015
10.1118/1.597312
10.1016/0141-5425(91)90126-R
jain, 1989, Fundamentals of Digital Image Processing
10.1007/BF02446100
10.1118/1.597429
10.1109/22.654920
chaudhary, 1984, dielectric properties of normal human breast tissues at radiowave and microwave frequencies, Indian J Biochem Biophys, 21, 76
10.1364/OL.23.000648
10.1016/0360-3016(80)90223-0
10.1117/12.349572
10.1109/TBME.1981.324791
10.1109/TASSP.1981.1163528
10.1109/58.646914
10.1109/T-SU.1985.31627
gusev, 1993, Laser Optoacoustics
10.1109/TASSP.1983.1164196