Extraction of extinction, refraction and absorption properties in diffraction enhanced imaging

Diffraction enhanced imaging is a radiographic technique that derives contrast from an object's x-ray absorption, refraction gradient and small angle scatter properties (extinction). In prior work, images obtained using two analyser settings were combined to obtain refraction angle and apparent absorption images. A more general method of determining independently the refraction, absorption and extinction of the object is presented. This approach has been used to model the transmission, refraction and scatter distribution of the sample and to visualize these three physical phenomena separately.