Measuring and testing – Vibration – By mechanical waves
Patent
1982-07-16
1984-10-09
Ciarlante, Anthony V.
Measuring and testing
Vibration
By mechanical waves
G01N 2904
Patent
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.
Flax Stephen W.
Glover Gary H.
Ciarlante Anthony V.
General Electric Company
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