Apparatus for ultrasonic color flow mapping

Details Apparatus for ultrasonic color flow mapping Apparatus for ultrasonic color flow mapping

1991-10-24

1993-09-21

Jaworski, Francis

Surgery

Truss

Pad

12866005, A61B 806

Patent

active

052460061

ABSTRACT:
An ultrasonic flow mapping apparatus transmits and reflects waves from sampling points on a two-dimensional cross-section. The waves are detected while transmitting repeatedly ultrasonic pulses. The phase shifts of different reflected waves are calculated, and displayed in color to show a distribution of blood flow velocity. Artifact due to reflected waves from body organs, which remain even by using MTI filters, is detected from phase signals, which have not passed through the MTI filters, and the artifact is removed by lowering display brightness for a sampling point corresponding to a relevant detection output.

REFERENCES:
patent: 4761740 (1988-08-01), Lipschutz
patent: 4911171 (1990-03-01), Uchibori
patent: 4932415 (1990-06-01), Angelsen et al.
patent: 5031628 (1991-07-01), Nakamura et al.
patent: 5042491 (1991-08-01), Amemiya
patent: 5078146 (1992-01-01), Sato

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