Method for adjustment of the Doppler angle in echography, and ar

Details Method for adjustment of the Doppler angle in echography, and ar Method for adjustment of the Doppler angle in echography, and ar

1996-11-22

1999-08-24

Kamm, William E.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

600454, A61B 800

Patent

active

059418265

ABSTRACT:
The Doppler angle is adjusted to a value close to the optimum Doppler angle DAopt, typically amounting to 60.degree., between the direction of an echographic excitation and the axis of a blood vessel in an echographic image, based on prior designation of an initial point in the vessel. The method includes a first measurement of the Doppler angle DA1 in a first, predetermined excitation direction, comparison of DA1 with Daopt, formation of .DELTA..theta.=.vertline.DAopt-DA1.vertline., and correction of the direction of the echographic excitation by the value .DELTA..theta. in order to shift it to a second direction.

REFERENCES:
patent: 4803990 (1989-02-01), Bonnefous et al.
patent: 5454372 (1995-10-01), Banjanin et al.
patent: 5513640 (1996-05-01), Yamazaki et al.
patent: 5595182 (1997-01-01), Krivitski
"Traitement Numerique des Images", By Murat Kunt, Collection Technique et Scientifique des Telecommunications Presses Polytechniques et Universitaires Romanes.

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