24 February 2012 Travel time denoising in ultrasound tomography
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Accurate time delay estimation is critical for a wide range of remote sensing applications. We propose a technique that exploits the redundancy between absolute and relative time delays in transducer arrays as a means to reduce the level of noise present in the measurements. We formalize the problem of interest and present two different strategies to solve it. The first strategy is optimal in the mean square sense but requires a quadratic programming solver. The second approach is based on a sub-optimal iterative denoising technique. The effectiveness of our approach is demonstrated in the context of travel time tomographic imaging using numerical and physical breast mimicking phantoms as well as patient data.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
O. Roy, O. Roy, C. Li, C. Li, N. Duric, N. Duric, "Travel time denoising in ultrasound tomography", Proc. SPIE 8320, Medical Imaging 2012: Ultrasonic Imaging, Tomography, and Therapy, 832006 (24 February 2012); doi: 10.1117/12.911919; https://doi.org/10.1117/12.911919

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