Ultrasonic color flow mapping(CFM) system and ultrasonic doppler

Details Ultrasonic color flow mapping(CFM) system and ultrasonic doppler Ultrasonic color flow mapping(CFM) system and ultrasonic doppler

1998-09-03

2000-10-03

Lateef, Marvin M.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

A61B 0800

Patent

active

061266043

ABSTRACT:
An ultrasonic color flow mapping system and a filtering method for filtering an ultrasonic Doppler signal are provided. The ultrasonic color flow mapping system includes a forward processing portion for excluding initial output data up to a predetermined number from outputs based on an ultrasonic Doppler signal input having a predetermined index sequence, a backward processing portion for excluding initial output data up to a predetermined number from outputs based on the ultrasonic Doppler signal input having a backward index sequence with respect to the input of the forward processing portion, and an operator for calculating a power and an average frequency of the ultrasonic Doppler signal based on the outputs of the forward and backward processing portions and providing the calculated result as an output for image regeneration. As a result, a transient response with respect to a low-frequency signal contained in the ultrasonic Doppler signal can be minimized and an image such as a blood stream velocity can be accurately regenerated in real time.

REFERENCES:
patent: 4993417 (1991-02-01), Seo
patent: 5188113 (1993-02-01), Sato et al.
patent: 5249578 (1993-10-01), Karp et al.
patent: 5311870 (1994-05-01), Fukukita et al.
patent: 5483964 (1996-01-01), Amemiya et al.

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