4aBV15. Numerical calculations of scattering characteristics of inhomogeneities in biological tissue.

Session: Thursday Morning, June 19

Author: Vladimir I. Genis
Location: School of Biomed. Eng. Sci. and Health Systems, Drexel Univ., Philadelphia, PA 19104, genis@cbis.ece.drexel.edu
Author: Igor L. Oboznenko
Location: Polytechnic Univ., Kiev 252037, Ukraine
Author: Stanley Zietz
Location: Drexel Univ., Philadelphia, PA


Identification of inhomogeneities is one of the main problems in medical diagnosis, particularly in tissue characterization. Often the backscatter signal does not permit discrimination between inhomogeneities in the tissue. Despite high effectiveness of the B-mode diagnostic systems, at the present time ultrasonography does not provide a sufficient degree of diagnostic confidence in identification of pathology. Diffraction tomography promises to extend these observations quantitatively and provide information about tissue properties. The main goal of this work is to present a theoretical basis of the scattering process on inhomogeneities and provide some preliminary experimental results confirming theoretical investigations and numerical simulations. The method of integral equations for solving forward and inverse scattering problems is used, and scattering diagrams are presented. Experimental setup is based on one transmitting and seven receiving elements. Presented experimental resuls support numerical simulations.

ASA 133rd meeting - Penn State, June 1997