Tissue Attenuation Estimation Based on Standard Ultrasonographic Data.

摘要

Space-variant ultrasound attenuation in tissue is one of the phenomena that should be taken into account when reconstructing images from ultrasonographic data. This contribution presents a method to estimate automatically one-dimensional attenuation profiles along isolated 'rays', forming ultrasonic images. The estimates are based entirely on digital ultrasonographic data, without any reference to a-priori knowledge on anatomical structures involved. Using a standard model of ultrasound propagation, the 'layered' and discretised formulation allowed for simplified, thus manageable, least-squares-error estimation of the attenuation profiles. The results of analyzing ultrasonographic data obtained from biological objects, as presented on figures, are rather promising.