Surgery – Truss – Pad
Patent
1994-10-07
1995-08-08
Manuel, George
Surgery
Truss
Pad
73626, A61B 800
Patent
active
054389941
ABSTRACT:
A technique for scanning an image field with adjacent beams of ultrasonic energy is provided in which initially transmitted beams are transmitted along beam directions down the center of the image field. Subsequent beams are alternately transmitted on either side of the initially transmitted beams and at increasing lateral locations in said field with respect to the locations of the initially transmitted beams until the full image field has been scanned. In a preferred embodiment a waiting period is added to the pulse repetition interval of each transmission to allow time for multipath reflections to dissipate. The waiting periods are longer during initial transmissions in the vicinity of the center of the image field, and decline as beams are transmitted at increasing lateral locations of the field. The scanning technique provides a reduction in multipath reflection artifacts while maintaining a smoothly varying or uniform temporal disparity in the transmission times of adjacent beams.
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Roundhill David N.
Rust David W.
Starosta Mikhail
Advanced Technology Laboratories, Inc.
Brinton Yorks, Jr. W.
Manuel George
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