Digital scanline signal processor for an ultrasonic diagnostic i

Details Digital scanline signal processor for an ultrasonic diagnostic i Digital scanline signal processor for an ultrasonic diagnostic i

1997-07-11

2000-04-18

Lateef, Marvin M.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

A61B 800

Patent

active

060509422

ABSTRACT:
A digital scanline signal processor which processes beamformed echo signals includes a normalization circuit, a speckle reduction processor, and a gain stage which amplifies detected echo signals. The normalization circuit applies depth dependent gain to the scanline signals to equalize the amplitudes in channels of the processor with different passband characteristics. A log compression circuit includes two compression functions for low level and high level echo signals.

REFERENCES:
patent: 5152292 (1992-10-01), Karp
patent: 5409007 (1995-04-01), Saunders et al.
patent: 5482045 (1996-01-01), Rust et al.
patent: 5515852 (1996-05-01), Karp et al.
patent: 5544655 (1996-08-01), Diagle
patent: 5634465 (1997-06-01), Schmiesing et al.
patent: 5891038 (1999-04-01), Seyed-Bolorforosh et al.

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