Simple method for estimating linear attenuation coefficients from x-ray diffraction tomography data

Abstract

In this article, we demonstrate how the spatial distribution of x-ray linear attenuation coefficients within an object can be estimated from x-ray diffraction tomography data. The experimental arrangement to achieve this exploits a position sensitive detector and an analyzer crystal. The quality of reconstructed maps of linear attenuation coefficients is comparable to results obtained from conventional transmission computed tomography.

Cosine fitting radiography and computed tomography

“…Based on this method, the original DEI-CT method can present the two-dimensional (2D) and three-dimensional (3D) distributions of the absorption and refraction information. [8,[18][19][20][21] However, the USAXS information of the sample, which is the refraction effects of an inhomogeneous area with smaller size than that of the resolution element, is neglected and cannot be reconstructed by the original DEI-CT method. The absence of USAXS information may possibly obscure important details of a low-Z sample, like soft tissue.…”