发明名称 |
ULTRASONIC METHOD AND APPARATUS FOR MEASURING OR DETECTING FLOW BEHAVIOR OF A NON-SINUSOIDAL PERIODICITY |
摘要 |
A method and apparatus for automated detection of a general, non-sinusoidal type of periodicity in ultrasound Doppler signals from pulsatile blood flow is described. The method computes a pulsation index, which is a sum of the normalized powers of the fundamental and several harmonic components in the frequency spectrum of the banded Doppler signal. A weighting function may be applied to the power from each harmonic component in order to suppress contributions due to spurious peaks, as in the case when pulsatile flow is absent. |
申请公布号 |
EP1983898(A2) |
申请公布日期 |
2008.10.29 |
申请号 |
EP20070705730 |
申请日期 |
2007.01.29 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
RAJU, BALASUNDARA |
分类号 |
A61B5/00;A61B5/021;A61B5/0402;A61B8/00;A61B8/06;A61B8/08;A61N1/39 |
主分类号 |
A61B5/00 |
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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