Surgery – Truss – Pad
Patent
1996-10-04
1998-01-13
Lateef, Marvin M.
Surgery
Truss
Pad
12866007, A61B 806
Patent
active
057068186
ABSTRACT:
An ultrasonic diagnosing apparatus for acquiring Doppler information at a focal point in an object under inspection from AC components of a spatial frequency distribution of ultrasonic waves reflected from the focal point by removing components reflected from an off-axial static reflector. A transmission trigger generating circuit drives in accordance with predetermined time shifts an array of piezo-electric elements to transmit an electronically converged ultrasonic beam. Reflected signals from a reflector on the axis of the beam only are stored in memory.
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"Ultrasound Phased Array Delay Lines Based on Quadrature Sampling Techniques", Jeffrey E. Powers et al., IEEE Transactions on Sonics and Ultrasonics, vol. SU-27, No. 6, pp. 287-294, Nov. 1980.
"Marine Acoustics:Fundamentals and Applications", The Marine Acoustics Society of Japan,pp. 170-173, 1984.
Fields Derrick
Lateef Marvin M.
Olympus Optical Co,. Ltd.
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