Print Email Facebook Twitter Modeling breast ultrasound; on the applicability of commonly made approximations Title Modeling breast ultrasound; on the applicability of commonly made approximations Author Taskin, U. (TU Delft ImPhys/Acoustical Wavefield Imaging) Ozmen, Neslihan (Philips Healthcare Nederland) Gemmeke, Hartmut (Karlsruhe Institut für Technologie) van Dongen, K.W.A. (TU Delft ImPhys/Acoustical Wavefield Imaging) Date 2018 Abstract To design breast ultrasound scanning systems or to test new imaging methods, various computer models are used to simulate the acoustic wave field propagation through a breast. The computer models vary in complexity depending on the applied approximations. The objective of this paper is to investigate how the applied approximations affect the resulting wave field. In particular, we investigate the importance of taking three-dimensional (3-D) spatial variations in the compressibility, volume density of mass, and attenuation into account. In addition, we compare four 3-D solution methods: a full-wave method, a Born approximation method, a parabolic approximation method, and a ray-based method. Results show that, for frequencies below 1 MHz, the amplitude of the fields scattering off the compressibility or density contrasts are at least 24 dB higher than the amplitude of the fields scattering off the attenuation contrasts. The results also show that considering only speed of sound as a contrast is a valid approximation. In addition, it is shown that the pressure field modeled with the full-wave method is more accurate than the fields modeled using the other three methods. Finally, the accuracy of the full-wave method is location independent whereas the accuracy of the other methods strongly depends on the point of observation. Subject Breast ultrasoundForward modelingFull-wave method To reference this document use: http://resolver.tudelft.nl/uuid:50de2f97-9245-474c-b393-f5e3b94a0e16 DOI https://doi.org/10.24425/123914 ISSN 0137-5075 Source Archives of Acoustics, 43 (3), 425-435 Part of collection Institutional Repository Document type journal article Rights © 2018 U. Taskin, Neslihan Ozmen, Hartmut Gemmeke, K.W.A. van Dongen Files PDF 123914.pdf 7.44 MB Close viewer /islandora/object/uuid:50de2f97-9245-474c-b393-f5e3b94a0e16/datastream/OBJ/view