Method of determining ultrasonic attenuation of tissue using ref

Measuring and testing – Vibration – By mechanical waves

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G01N 2904

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active

044753969

ABSTRACT:
Ultrasonic wave attenuation is determined for a plurality of limited volumes of tissue comprising a body under examination by directing ultrasonic waves through each limited volume along a plurality of vectors, determining a measure of attenuation of the limited volume by detecting the frequency shift of reflections of the ultrasonic wave along each vector, and averaging the attenuation of each limited volume from each vector intersecting the limited volume.

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. 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.
"Statistical Evaluation of the Doppler Ultrasonic Blood Flowmeter", Flax et al, ISA Transactions, vol. 10, No. 1, 1971.

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