发明名称 |
WAVELET DEPULSING OF ULTRASOUND ECHO SEQUENCES |
摘要 |
<p>Methods and associated apparatuses for imaging a target. An echo sequence image of the target is acquired (10) and a log spectrum of at least a portion of the echo sequence image is computed. A point spread function is estimated (14) by one of two methods. According to the first method, a low-resolution wavelet projection of the echo sequence log spectrum (22) is used as an estimate of the log spectrum of the point-spread function. According to the second method, an outlier-resistant wavelet transform of the echo sequence log spectrum is effected (44), followed by soft-thresholding (46) and an inverse wavelet transform (48). Under both methods, a frequency domain phase of the point spread function also is estimated. The relevant portion of the echo sequence image is deconvolved using the estimated point spread function.</p> |
申请公布号 |
WO0185011(A9) |
申请公布日期 |
2002.12.27 |
申请号 |
WO2001US13590 |
申请日期 |
2001.04.27 |
申请人 |
TECHNION RESEARCH &, DEVELOPMENT FOUNDATION LTD.;ADAM, DAN;MICAILOVICH, OLEG;FRIEDMAN, MARK, M. |
发明人 |
ADAM, DAN;MICAILOVICH, OLEG |
分类号 |
A61B8/08;G01S15/89;G06K9/00;(IPC1-7):A61B8/00 |
主分类号 |
A61B8/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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