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Two-dimensional phase aberration correction using an ultrasonic 1.75D array: Case study on breast microcalcifications

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

Ultrasound phase aberration resulting from tissue velocity inhomogeneities reduce the focusing ability of ultrasound waves and degrade image quality. Two-dimensional phase aberration measurements and correction with higher-order 1.75D arrays are expected to reduce this problem. We implement a least-mean-squares measurement algorithm and discuss implementation decisions for phase aberration correction techniques. We present clinical results from using individual channel RF signals from an 8×128 1.75D array (Tetrad Co.) interfaced with a Siemens Elegra scanner. The average patient aberration measurement in the thyroid (9 patients) was 22.2 ± 4.6 ns r.m.s. amplitude with 4.8 mm ± 1.3 mm FWHM autocorrelation length. Analysis of breast scans (8 patients) resulted in a patient average aberration measurement of 33.1 ± 7.0 ns r.m.s. amplitude and 6.4 ± 1.5 mm FWHM. The results show a statistically significant difference (p-value = 0.01) in aberration measurements in clinical breast imaging patients in age groups 20-40 years old and 50-70 years old. We present result's of receive-only aberration correction in clinical images and describe quantitative improvements and the results from using specific correction implementation techniques in a case study of breast microcalcifications after phase aberration correction.

Duke Scholars

Published In

Proceedings of the IEEE Ultrasonics Symposium

ISSN

1051-0117

Publication Date

December 1, 2003

Volume

1

Start / End Page

348 / 353
 

Citation

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ICMJE
MLA
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Fernandez, A. T., & Trahey, G. E. (2003). Two-dimensional phase aberration correction using an ultrasonic 1.75D array: Case study on breast microcalcifications. Proceedings of the IEEE Ultrasonics Symposium, 1, 348–353.
Fernandez, A. T., and G. E. Trahey. “Two-dimensional phase aberration correction using an ultrasonic 1.75D array: Case study on breast microcalcifications.” Proceedings of the IEEE Ultrasonics Symposium 1 (December 1, 2003): 348–53.
Fernandez AT, Trahey GE. Two-dimensional phase aberration correction using an ultrasonic 1.75D array: Case study on breast microcalcifications. Proceedings of the IEEE Ultrasonics Symposium. 2003 Dec 1;1:348–53.
Fernandez, A. T., and G. E. Trahey. “Two-dimensional phase aberration correction using an ultrasonic 1.75D array: Case study on breast microcalcifications.” Proceedings of the IEEE Ultrasonics Symposium, vol. 1, Dec. 2003, pp. 348–53.
Fernandez AT, Trahey GE. Two-dimensional phase aberration correction using an ultrasonic 1.75D array: Case study on breast microcalcifications. Proceedings of the IEEE Ultrasonics Symposium. 2003 Dec 1;1:348–353.

Published In

Proceedings of the IEEE Ultrasonics Symposium

ISSN

1051-0117

Publication Date

December 1, 2003

Volume

1

Start / End Page

348 / 353