methods to measure the impulsu00fcbertragungsspektrums of elastic scattered ru00f6ntgenquanten

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. The scatter voxel is located in a radioscopy unit which has an anode extended in a Y-direction with a plurality of focus points. The 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. A scatter collimator is arranged between the examination area and the isocentre and allows through only scatter quanta, from the object. The X-ray quanta are emitted at an angle of scatter (Θ) with a constant Z-component (Θ_Z), wherein the scatter collimator includes a detector. The X-component of a scatter voxel of the object is imaged onto the Z-component of the detector. The method includes simultaneous recording of the energy spectrum of scatter quanta from the scatter voxel at different angles of scatter (Θ) with a spatially-resolving and energy-resolving detector in the Y-Z plane, determining the momentum transfer, that is the diffraction profile of the scatter voxel, from the geometric data of the radioscopy unit for the different angles of scatter (Θ), and combining the respective diffraction profiles that belong to different angles of scatter (Θ) to produce a total-diffraction profile.