Dynamic transmit focusing of a steered ultrasonic beam

Details Dynamic transmit focusing of a steered ultrasonic beam Dynamic transmit focusing of a steered ultrasonic beam

1991-09-30

1993-08-17

Jaworski, Francis

Surgery

Truss

Pad

73625, A61B 800

Patent

active

052359824

ABSTRACT:
A phased array sector scanning (PASS) ultrasonic imaging system produces a fixed focus, steered transmit beam with an array of transducer elements. A receiver forms the echo signals received from an ultrasonic energy reflecting object at the array elements into a receive beam steered in the same direction as the transmit beam and dynamically focused. A midprocessor in the receiver makes corrections to the receive beam samples to offset errors caused by the transmit beam being out of focus at all but its fixed focal range.

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