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Method and system for Doppler ultrasound measurement of blood flow

  • US 5,701,898 A
  • Filed: 05/21/1996
  • Issued: 12/30/1997
  • Est. Priority Date: 09/02/1994
  • Status: Expired due to Term
First Claim
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1. A Doppler ultrasound apparatus for measuring flow in a localized region within a vessel, said flow having an associated velocity, said apparatus comprising:

  • an ultrasound probe for generating and detecting an incident and reflected ultrasound signal, respectively, said incident and reflected ultrasound signal including a Doppler ultrasound signal;

    a position and orientation system which generates an orientation and position signal for said ultrasound probe; and

    a processor which provides a corrected ultrasound signal representing said flow, based on said orientation and position signal, and on said ultrasound signal to generate a three-dimensional representation of said vessel for determining a three-dimensional flow direction for said localized region within the vessel;

    wherein said corrected ultrasound signal compensates for errors in measuring said flow that are due to angular misalignment of said ultrasound probe relative to said velocity of said flow in said localized region.

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