Method and apparatus for ultrasound imaging

Details Method and apparatus for ultrasound imaging Method and apparatus for ultrasound imaging

1994-06-02

1995-11-14

Manuel, George

Surgery

Truss

Pad

A61B 800

Patent

active

054657237

ABSTRACT:
Ultrasound imaging of an object is effected by directing a first and a second ultrasound pulse emitted by a transducer along a beam propagation direction against an object to be imaged. The second pulse has a transducer-to-object propagation time greater than the first pulse, the propagation time difference being achieved by selectively varying the effective or acoustic distance between the transducer and the object. A second scanline signal returned from the object as an echo of the second pulse is time-shifted as a function of the propagation time difference and is subtracted from the first scanline signal returned from the object as an echo of the first pulse, thereby significantly reducing from the resulting signal reverberation echoes between the transducer and the object. Transducer arrangements for providing the relative propagation time difference of the first and second pulses operatively vary the acoustic distance between the transducer and the object.

REFERENCES:
patent: 5320106 (1994-06-01), Tanaka

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