V.V. Lider Federal Scientific Research Center "Crystallography and Photonics", Russian Academy of Sciences, Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii prosp. 59, Moscow, 119333, Russian Federaion
The review describes the principles of operation and capabilities of X-ray refraction introscopy based on the use of a crystal analyzer as an angle filter. Methods for obtaining absorption, refraction and extinction contrast, various algorithms for image processing for the implementation of two-dimensional and three-dimensional visualization are considered. Examples of using the method in biomedicine and material science are given.