Method of measuring the momentum transfer spectrum of elastically scattered X-ray quanta

摘要

A method of measuring a momentum transfer spectrum of elastically scattered X-ray quanta which emanate from a scatter voxel inside an object to be examined is described. A scatter voxel emits X-radiation in an X-direction and has a primary collimator which allows through only primary radiation aimed at a single isocentre at the origin of a Cartesian coordinates system. The X-ray quanta are emitted at an angle of scatter (Theta) with a constant Z-component (Theta_z). The method includes simultaneous recording of the energy spectrum of scatter quanta from the scatter voxel at different angles of scatter (Theta) with a spatially-resolving and energy-resolving detector in the Y-Z plane, determining the momentum transfer from the geometric data of the radioscopy unit for different angles of scatter (Theta), and combining respective diffraction profiles belonging to different angles of scatter (Theta) to produce a total-diffraction profile.