ULTRASONIC DIFFRACTION IMAGING

Abstract

A new approach to diffraction tomography is presented. This approach eliminates the need for plane wave illumination and, also, only two rotational positions of the object are required. The theory for this new approach is based on small perturbation approximation to the wave equation. We have derived reconstruction algorithms for linear viscoelastic and viscous fluid models of the object. Algorithms are also presented for lossy coupling media. Computer simulation and some very preliminary experimental results are presented to verify the theory