Calculation of projection data for the ultrasonic computed tomography by the ray tracing method
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概要
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While the X-ray CT has come true and used to medical measurements, the ultrasonic CT has not yet fully improved because the propagating wave refracts at the border that two different sound velocity areas meet. To develop the reconstruction algorithm of the ultrasonic CT, many projection data in different condition such as sound velocity, attenuation coefficient or shapes of target objects are needed. These data naturally can be obtained experimentally, but rigorous evaluation of the algorithm often becomes difficult due to the difficulty of making a precise phantom model for such experiments, so we propose a substitutional method, that is the "simulator for projection data of ultrasonic CT. " To treat arbitrary objects, projection data are calculated by the ray tracing method because of difficulty to get a rigorous solution of a wave equation.
- 社団法人日本音響学会の論文
著者
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TABEI Makoto
Research Laboratory of Precision Machinery and Electronics, Tokyo Institute of Technology
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Tabei M
Tokyo Inst. Technol.
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Tabei Makoto
Research Laboratory Of Precision Machinery And Electronics Tokyo Institute Of Technology
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Saito Hikaru
Mitsui & Co. Ltd.
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Ueda M
Laboratory Of Biocycle Engineering Department Of Applied Biological Chemistry Osaka Prefecture Unive
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Ueda Mitsuhiro
Laboratory Of Biocycle Engineering Graduate School Of Life And Environmental Sciences Osaka Prefectu
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YAMAMOTO Hiroshi
Faculty of Engineering, Tokyo Institute of Technology
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Ueda Mitsuhiro
International Cooperation Center for Science and Technology
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Yamamoto H
Toyohashi Univ. Technol. Toyohashi‐shi Jpn
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Yamamoto Hiroshi
Faculty Of Engineering Tokyo Institute Of Technology
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