Corrections for pulse reverberations and phasefront...

Details Corrections for pulse reverberations and phasefront... Corrections for pulse reverberations and phasefront...

2005-06-14

2005-06-14

Imam, Ali (Department: 3737)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S447000

Reexamination Certificate

active

06905465

ABSTRACT:
A method of correcting for pulse reverberations in ultrasound imaging using two-dimensional transducer arrays, and uses such reduction in element signals and beam signal before estimation of corrections for phase front aberrations of the ultrasound wave. The pulse reverberation is estimated by two transmit events, where the second event is determined by measurement and processing on measurement on echoes of the first event. In a second embodiment of the invention, the reverberation is estimated by a single transmit event, using two receive beams and processing on these. In a third embodiment of the invention the reverberation from very strong scatterers is reduced by adjustment of the active transmit aperture.

REFERENCES:
patent: 5465723 (1995-11-01), Angelsen et al.
patent: 5565627 (1996-10-01), Dorr
patent: 6021093 (2000-02-01), Birchak et al.
patent: 6485423 (2002-11-01), Angelsen et al.

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