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An investigation of wavefront distortion correction: correction using averaged phase information and the effect of correction in one and two dimensions [medical US imaging]

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4 Author(s)
Kanda, R. ; Toshiba Corp., Tochigi, Japan ; Sumino, Y. ; Takamizawa, K. ; Sasaki, H.

A method for estimating arrival time fluctuation for wavefront distortion correction is proposed and compared with the cross-correlation method. The improvement of image quality achieved by these methods is almost the same under normal conditions. However, the proposed method underestimates phase aberration in the presence of increased severe noise, while estimates from the cross-correlation method fluctuate more than expected under the same condition. the effect of phase aberration on received signals has been confirmed experimentally to be a decrease in the similarity between signals. Beam patterns distorted by two-dimensional phase aberration are not improved by one-dimensional correction but are improved by two-dimensional correction

Published in:

Ultrasonics Symposium, 1991. Proceedings., IEEE 1991

Date of Conference:

8-11 Dec 1991

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