Corrections for wavefront aberrations in ultrasound imaging

Details Corrections for wavefront aberrations in ultrasound imaging Corrections for wavefront aberrations in ultrasound imaging

2007-09-25

2007-09-25

Mercader, Eleni Mantis (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S443000, C600S447000, C600S458000

Reexamination Certificate

active

10894387

ABSTRACT:
An estimation method for correction filters for wavefront aberration correction in ultrasound imaging is given. The aberration is introduced due to spatial variations of the ultrasound propagation velocity in heterogeneous tissue. The correction filters are found as eigenvectors of the cross-correlation matrix of the element signals. In particular, the eigenvectors with a small spatial linear/plane phase component is sought. Detailed methods for calculating the eigenvectors are given.

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