发明名称 |
DOPPLER FLOW MEASUREMENT APPARATUS |
摘要 |
The present invention relates to a measurement of a flow by the use of Doppler ultrasound, and in particular, by analyzing the spectrum of the reflected ultrasonic signal. The reflected signal is mixed electronically with the transmitted signal in a product detector, demodulator or similar component (250) to produce a signal that is shifted in frequency. In another embodiment, the method includes analyzing the spectrum (280, 300) of the reflected ultrasonic beams by performing the step of: (a) determining a maximum frequency of the detector output signal which is representative of a maximum particle velocity; and (b) calculating a total flow of the particles based on the maximum particle velocity.
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申请公布号 |
WO2006028990(A3) |
申请公布日期 |
2006.06.29 |
申请号 |
WO2005US31363 |
申请日期 |
2005.09.02 |
申请人 |
NEPHROS, INC.;EILERS, GEORGE;WEBBER, WES;SPENCE, EDWARD |
发明人 |
EILERS, GEORGE;WEBBER, WES;SPENCE, EDWARD |
分类号 |
A61B8/06 |
主分类号 |
A61B8/06 |
代理机构 |
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