Ultrasound Pulse-Echo Imaging with an Optimized Propagator

Properly accounting for ultrasound scattering from heterogeneities within the breast is essential for high- resolution ultrasound breast imaging. This requires a reflectivity image reconstruction method capable of accurately handling ultrasound scattering. We develop an optimized ultrasound-wave pro...

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Bibliographic Details
Main Authors: Lianjie Huang, Cuiping Li, Duric, N., Youli Quan, Hanson, K.M.
Format: Conference Proceeding
Language:English
Subjects:
Acoustic propagation
Acoustic scattering
Breast
Breast imaging
High-resolution imaging
Image reconstruction
Image resolution
Partial differential equations
pulse-echo
Reflectivity
scattering
Signal resolution
Ultrasonic imaging
ultrasound
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Summary:Properly accounting for ultrasound scattering from heterogeneities within the breast is essential for high- resolution ultrasound breast imaging. This requires a reflectivity image reconstruction method capable of accurately handling ultrasound scattering. We develop an optimized ultrasound-wave propagator for reflectivity image reconstruction using pulse-echo ultrasound signals. The method is based on a solution of one-way wave equation and recursive inward continuation of ultrasound wavefields in the frequency-space and frequency-wavenumber domains using a heterogeneous sound-speed model of the breast obtained from tomography. It minimizes ultrasound phase errors during wavefield inward continuation while maintaining the advantage of high computational efficiency. Pulse- echo ultrasound imaging tests for a numerical breast phantom demonstrate that our optimized method has the potential to improve the reliability and accuracy of ultrasound breast imaging.
ISSN:1948-2914
1948-2922
DOI:10.1109/BMEI.2008.289