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Off-axis scatterer filters for improved aberration measurements

Publication ,  Journal Article
Dahl, JJ; Trahey, GE
Published in: Proceedings of the IEEE Ultrasonics Symposium
December 1, 2003

Successful adaptive imaging requires accurate measurements of the aberration profile across the array surface. A spatial filter is proposed in this work to obtain more accurate aberration measurements by suppressing wavefronts from off-axis scatterers. Application of these filters to the RF signals of the individual elements rejects wavefronts arriving from angles other than the look direction and results in an increase in element-to-element correlation. Off-axis scatterer filtering reduced the amount of residual error after phase correction by up to 36% on a 1×192 array and as much as 21% for a 8×96 array. Contrast measurements show that lesion contrast can increase up to 18% with this method.

Duke Scholars

Published In

Proceedings of the IEEE Ultrasonics Symposium

ISSN

1051-0117

Publication Date

December 1, 2003

Volume

1

Start / End Page

343 / 347
 

Citation

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Dahl, J. J., & Trahey, G. E. (2003). Off-axis scatterer filters for improved aberration measurements. Proceedings of the IEEE Ultrasonics Symposium, 1, 343–347.
Dahl, J. J., and G. E. Trahey. “Off-axis scatterer filters for improved aberration measurements.” Proceedings of the IEEE Ultrasonics Symposium 1 (December 1, 2003): 343–47.
Dahl JJ, Trahey GE. Off-axis scatterer filters for improved aberration measurements. Proceedings of the IEEE Ultrasonics Symposium. 2003 Dec 1;1:343–7.
Dahl, J. J., and G. E. Trahey. “Off-axis scatterer filters for improved aberration measurements.” Proceedings of the IEEE Ultrasonics Symposium, vol. 1, Dec. 2003, pp. 343–47.
Dahl JJ, Trahey GE. Off-axis scatterer filters for improved aberration measurements. Proceedings of the IEEE Ultrasonics Symposium. 2003 Dec 1;1:343–347.

Published In

Proceedings of the IEEE Ultrasonics Symposium

ISSN

1051-0117

Publication Date

December 1, 2003

Volume

1

Start / End Page

343 / 347