Abstract
A two-step algorithm is used to reconstruct the spatial distributions of the acoustic characteristics of soft biological tissues-the sound velocity and absorption coefficient. Knowing these distributions is urgent for early detection of benign and malignant neoplasms in biological tissues, primarily in the breast. At the first stage, large-scale distributions are estimated; at the second step, they are refined with a high resolution. Results of reconstruction on the base of model initial data are presented. The principal necessity of preliminary reconstruction of large-scale distributions followed by their being taken into account at the second step is illustrated. The use of CUDA technology for processing makes it possible to obtain final images of 1024 × 1024 samples in only a few minutes.
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Original Russian Text © V.A. Burov, D.I. Zotov, O.D. Rumyantseva, 2014, published in Akusticheskii Zhurnal, 2014, Vol. 60, No. 4, pp. 443–456.
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Burov, V.A., Zotov, D.I. & Rumyantseva, O.D. Reconstruction of spatial distributions of sound velocity and absorption in soft biological tissues using model ultrasonic tomographic data. Acoust. Phys. 60, 479–491 (2014). https://doi.org/10.1134/S1063771014040022
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DOI: https://doi.org/10.1134/S1063771014040022