Method and apparatus for echo-ultrasound imaging using compound

Details Method and apparatus for echo-ultrasound imaging using compound Method and apparatus for echo-ultrasound imaging using compound

1985-04-24

1987-03-31

Ciarlante, Anthony V.

Measuring and testing

Vibration

By mechanical waves

73620, 73629, 128660, G01N 2904

Patent

active

046533281

ABSTRACT:
A Compound echo-ultrasound imaging system in which the intensity of pixels in an image is a nonlinear function of the amplitude and frequency of echo signals. The dynamic range of a synchronous FM detector in the system is increased by effectively filtering from the echo signals all instantaneous frequencies which would produce intensity levels greater than a corresponding signal of equal amplitude at the carrier frequency of the ultrasound pulses. Filtering may be effectively accomplished by setting the Corner Frequency of the synchronous detector to the carrier frequency of the transmitted pulses.

REFERENCES:
patent: 3453871 (1969-07-01), Krautkramer
patent: 4086818 (1978-05-01), Reynolds
patent: 4512196 (1985-04-01), Barnes
patent: 4534359 (1985-08-01), Miller-Jones et al.
patent: 4543826 (1985-10-01), Ferrari

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