Method of CW doppler imaging using variably focused ultrasonic t

Details Method of CW doppler imaging using variably focused ultrasonic t Method of CW doppler imaging using variably focused ultrasonic t

1984-07-17

1986-07-08

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73625, 367 90, 367105, 128660, 128663, G01N 2900

Patent

active

045985898

ABSTRACT:
Continuous wave (CW) Doppler imaging employs a linear array of transducer elements with a first plurality of elements functioning as an ultrasonic wave transmitter and a second plurality of elements functioning as a receiver of the reflected ultrasonic wave. Time delay circuitry connected to the transmitter and receiver elements define the beam focus and beam steering of the ultrasonic wave.

REFERENCES:
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patent: 4217909 (1980-08-01), Papadofrangakis et al.
patent: 4265126 (1981-05-01), Papadofrangakis et al.
patent: 4492120 (1985-01-01), Lewis et al.
patent: 4509153 (1985-04-01), Weight

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