Ultrasonic measurement method, and apparatus therefor

Details Ultrasonic measurement method, and apparatus therefor Ultrasonic measurement method, and apparatus therefor

1984-09-18

1986-06-17

Ciarlante, Anthony V.

Measuring and testing

Vibration

By mechanical waves

128660, G01N 2904

Patent

active

045948950

ABSTRACT:
A method and apparatus wherein two probes are arranged to oppose each other on either side of an object under investigation and each of two probes emits ultrasonic waves to measure the acoustic characteristics of the object respectively.
Mean attenuation coefficients for small intervals can be calculated solely from the received echo signals by processing signals indicative of echos of the ultrasonic waves from the two probes. Reflection coefficients can be calculated from the mean attenuation coefficients obtained. In addition, a distribution image of either of the mean attenuation coefficient and reflection coefficient distributions are obtained from these mean attenuation coefficients and reflection coefficients for the small intervals.

REFERENCES:
patent: 3681977 (1972-08-01), Wendt et al.
patent: 3713329 (1973-01-01), Munger
patent: 4202215 (1980-05-01), Meyer
IEEE Transactions on Biomedical Engineering, vol. BME-27, No. 2, Feb. 1980, pp. 76-83, New York (US).
M. Kadaba et al.: "Attenuation and Backscattering of Ultrasound in Freshly Excised Animal Tissues", *p. 76, right-hand col., line 8; p. 80, right-hand col., line 40.

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