Ultrasound imaging system with improved dynamic focusing

Details Ultrasound imaging system with improved dynamic focusing Ultrasound imaging system with improved dynamic focusing

1992-04-13

1993-07-27

Jaworski, Francis

Surgery

Truss

Pad

73625, A61B 800

Patent

active

052303403

ABSTRACT:
A PASS ultrasonic system includes a receive channel for each element in an ultrasonic transducer array which imparts a delay to the echo signal produced by each element. The delayed echo signals are summed to form a steered and dynamically focused receive beam. Each receive channel is formed as an integrated circuit. The integrated circuit calculates the required time delay for dynamic focussing in the receive channel as a function both of elapsed time in unit increments related to unit phase rotation increments of the carrier frequency and of previously calculated time delay values, in order to control a phase rotator and delay FIFO in the receive channel to implement echo signal delay control.

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