Method for recognizing different frequency dependent scatter mec

Details Method for recognizing different frequency dependent scatter mec Method for recognizing different frequency dependent scatter mec

1982-07-16

1984-10-09

Ciarlante, Anthony V.

Measuring and testing

Vibration

By mechanical waves

G01N 2904

Patent

active

044753950

ABSTRACT:
Time gain control of a variable gain amplifier in an ultrasonic scanning system is defined from ultrasonic attenuation of tissue under examination. An ultrasonic signal is directed into the tissue and a reflected signal is detected. The frequency of the reflected signal is measured, and frequency dependent scatter perturbations are identified and eliminated from the measured frequency. Tissue attenuation is then established from the measured frequency after perturbations are eliminated.

REFERENCES:
patent: 3309914 (1967-03-01), Weighart
patent: 4016750 (1977-04-01), Green
"Ultrasonic Attenuation Tomography of Soft Tissues"; Dines et al, Ultrasonic Imaging, vol. 1, No. 1, 1979.
"Estimating the Acoustic Attenuation Coefficient Scope for Liver from Reflected Ultrasound Signals", Kuc et al, IEEE Transactions on Sonics and Ultrasonics, vol. SU-26, No. 5, Sep. 1979.

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