MODIFIED DISTORTED BORN ITERATIVE METHOD WITH MULTI-DISTANCE RECEIVER FOR ENHANCED-QUALITY RECONSTRUCTION IN ULTRASOUND TOMOGRAPHY

Tóm tắt

Ultrasound tomography would allow ultrasound imaging to reach its full potential,
compared to X-ray, MRI, etc. It is based on inverse scattering and has the capability to
detect structures whose sizes are smaller than the wavelength of the incident wave, as
opposed to conventional one using pulse-echo technique. Some material properties such
as sound contrast and attenuation are very useful to detect small objects. The Distorted
Born Iterative Method (DBIM) based on first-order Born approximation is an efficient
diffraction tomography approach. In this paper, we propose a modified DBIM approach in
order to improve the reconstruction quality by using the information of the multi-distance
receiver. The normalized error of the proposed approach is significantly reduced