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WALL FILTER FOR ULTRASONIC MITRAL REGURGITATION ANALYSIS
专利权人:
Qifeng Wei
发明人:
Qifeng Wei,Karl Thiele
申请号:
US13994923
公开号:
US20130296703A1
申请日:
2011.12.15
申请国别(地区):
US
年份:
2013
代理人:
摘要:
An ultrasonic diagnostic imaging system is described which quantifies regurgitant flow through a mitral valve. Echo signals received by an ultrasound probe (10) are used to produce an image of a regurgitant flow region, and are processed by a wall filter having a response characteristic which peaks at an intermediate sampling rate between zero and the Nyquist limits. This response characteristic is thus highly sensitive to lower flow rates which may be anticipated in a flow velocity field proximal a regurgitant orifice. Echo signals passed by the wall filter are Doppler processed and used to quantify the flow through the regurgitant orifice.
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