Apparatus and method of assessing a narrowing in a fluid filled tube
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United States of America Patent
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Oct 3, 2017
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Aug 20, 2015
app pub date -
Apr 30, 2015
filing date -
Jan 6, 2011
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Abstract
An apparatus and method of assessing a narrowing in a fluid filled tube having a fluid flow pressure wave having a backward-originating pressure component and a forward-originating pressure component without taking a flow velocity measurement, comprising: taking pressure measurements in the tube; separating the pressure components into the backward-originating pressure component and the forward-originating pressure component; identifying a time window when the differential of flow velocity (dU) is minimal or absent; and deriving the backward and forward pressure components for pressure measurements taken in at least the time window.
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