Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1979-06-15
1981-05-05
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
128663, G01F 166
Patent
active
042651263
ABSTRACT:
Two components of the velocity of blood or similar liquids and the true flow vector are derived by a linear transducer array cross-beam configuration. Ultrasound pulses are transmitted from the center elements and backscattered echoes are received by left and right receiver sub-arrays whose locations depend on the observation point. A duplex imaging system with a sector scanner incorporates a Doppler modality with little added complexity and provides components of flow velocity parallel to and transverse to the acoustic beam direction from which the true velocity vector is computed.
REFERENCES:
patent: 3766517 (1973-10-01), Fahrbach
patent: 3939707 (1976-02-01), Kossoff
patent: 4217909 (1980-08-01), Papadofrangakis et al.
"Instantaneous Bi-dimensional Blood Velocity Profiles in the Major Vessels by a Pulsed Ultrasonic Doppler Velocimeter", Peronneau et al., Proceedings of the Second World Congress on Ultrasonics in Medicine, Rotterdam, 4-8 Jun. 1973, pp. 259-266, Excerpta Medica Amsterdam 1974, American Elsevier Publishing Company, Inc. New York.
Engeler William E.
Fakiris John A.
Papadofrangakis Emmanuel
Campbell Donald R.
Davis James C.
General Electric Company
Ruehl Charles A.
Snyder Marvin
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