Method and apparatus for automatic Doppler angle estimation in u

Details Method and apparatus for automatic Doppler angle estimation in u Method and apparatus for automatic Doppler angle estimation in u

1998-12-01

2000-05-30

Lateef, Marvin M.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

600454, A61B 802

Patent

active

060685980

ABSTRACT:
A method for automatic Doppler angle estimation based on the B-mode and color flow (if available) image. The method uses an algorithm for automatic vessel slope measurement which first finds an optimal initial point within the sample volume or range gate, and then searches for the most reliable pixel points (near or far walls) based on a combination of intensity-only and intensity-difference thresholds, before performing a slope estimation. B-mode intensity data and, optionally, color flow velocity or power data (before gray/color mapping) are used. The algorithm may also be applied to methods for automatic tracking of vessel diameter and flow rate calculations, although the primary objective is to achieve automatic Doppler angle estimation in an ultrasound scanner.

REFERENCES:
patent: 5375600 (1994-12-01), Melton, Jr. et al.
patent: 5820561 (1998-10-01), Olstad et al.
patent: 5941826 (1999-08-01), Goujon

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