Proper Analytic Point Spread Function for Lateral Modulation
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概要
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For ultrasonic lateral modulation for the imaging and measurement of tissue motion, better envelope shapes of the point spread function (PSF) than of a parabolic function are searched for within analytic functions or windows on the basis of the knowledge of the ideal shape of PSF previously obtained, i.e., having a large full width at half maximum and short feet. Through simulation of displacement vector measurement, better shapes are determined. As a better shape, a new window is obtained from a Turkey window by changing Hanning windows by power functions with an order larger than the second order. The order of measurement accuracies obtained is as follows, the new window $>$ rectangular window $>$ power function with a higher order $>$ parabolic function $>$ Akaike window.
- 2010-07-25
著者
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Sumi Chikayoshi
Department Of Electrical And Electronics Engineering Faculty Of Science And Technology Sophia Univer
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Shimizu Kunio
Department Of Chemistry Faculty Of Science And Technology Sophia University
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Sumi Chikayoshi
Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University, Chiyoda, Tokyo 102-8554, Japan
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Shimizu Kunio
Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University, Chiyoda, Tokyo 102-8554, Japan
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Matsui Norihiko
Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University, Chiyoda, Tokyo 102-8554, Japan
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