Transducer array for sector scan and doppler flow measurement ap

Details Transducer array for sector scan and doppler flow measurement ap Transducer array for sector scan and doppler flow measurement ap

1983-10-20

1985-07-23

Howell, Kyle L.

Surgery

Truss

Pad

A61B 1000

Patent

active

045303630

ABSTRACT:
An array of transducer elements which can be selectively actuated as a linear array for sector scanning and selectively actuated as a plurality of concentric annular arrays for focused Doppler blood flow measurements.

REFERENCES:
patent: 3888238 (1975-06-01), Meindl
patent: 4067236 (1978-01-01), Hottinger
patent: 4219846 (1980-08-01), Auphan
patent: 4235111 (1980-11-01), Hassler
patent: 4242912 (1981-01-01), Burckhardt
patent: 4307613 (1981-12-01), Fox
patent: 4422332 (1983-12-01), Dubuis et al.
Hottinger and Meindl, "Blood Flow Measurements Using the Attenuation Compensated Volume Flow Meter", Ultrasonic Imaging, vol. 1, No. 1, 1979.
Fu et al., "Near Field Uniform Beams for Pulsed Doppler Ultrasound", Ultrasonic Imaging, vol. 2, 1980, pp. 324-337.
Dretz et al., "Expanded Aperture Annular Array", Ultrasonic Imaging, vol. 1, 1979, pp. 56-75.

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