Beamforming time delay correction for a multi-element array ultr

Details Beamforming time delay correction for a multi-element array ultr Beamforming time delay correction for a multi-element array ultr

1994-01-18

1995-02-14

Manuel, George

Measuring and testing

Vibration

By mechanical waves

12866006, G01N 2918

Patent

active

053884612

ABSTRACT:
An ultrasonic imaging system for performing a scan in which beamforming time delay errors due to nonuniformity in sound speed within the transmission medium are corrected employs a multiple channel transmitter and receiver. Time delay errors are measured by cross correlating the channel signal in each respective one of the receiver channels with a reference beamsum signal produced by summing all the receiver channel signals. The resulting time delay corrections are applied to corresponding channels of the transmitter and receiver to offset time delay errors in the subsequent acquisition of image data.

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