Ultrasonic imaging apparatus and method of forming an ultrasonic

Details Ultrasonic imaging apparatus and method of forming an ultrasonic Ultrasonic imaging apparatus and method of forming an ultrasonic

1986-08-21

1988-12-27

Levy, Stewart J.

Measuring and testing

Vibration

By mechanical waves

73628, G01N 2904

Patent

active

047931841

ABSTRACT:
An ultrasonic imaging apparatus and method of forming an image of an acoustic image of an object employing the aperture synthesis technique, in which at least one partial aperture for accommodating a predetermined number of successive transducers is established and applied to a transducer array to select the predetermined number of successive transducers accommodated in the partial aperture so that the selected transducers serve to transmit ultrasonic acoustic signals to an object and receive signals reflected from the object, and the at least one partial aperture is specifically moved along the arrayed transducers for similar signal transmission to and/or signal reception from the object, whereby the apparatus and the method do not suffer substantial noise caused during changeover between transmitting and receiving operation modes and/or enjoy and enlarged aperture for signal transmission or enlarged aperture for signal reception with a suppressed decrease of the frame rate.

REFERENCES:
patent: 4359767 (1982-11-01), Sachs et al.
patent: 4448076 (1984-05-01), van Heelsbergen
patent: 4553437 (1985-11-01), Luthra et al.
patent: 4561308 (1985-12-01), Bele et al.

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