Device and method useful for X-ray fluorescence analysis of contrast agent dispersion, comprises an X-ray source, a beam collimator, a radial arrangement of collimator blades and an X-ray detector

摘要

Device and method for X-ray fluorescence analysis of contrast agent dispersion, comprises an X-ray source (1) and a beam collimator (2). A radial arrangement of collimator blades (8) is oriented on the primary beam. The X-ray with small or vanishing angular deviation passes through a radial direction. The multiply scattered X-rays (9) are absorbed by the collimator blades. The collimated X-rays (3) pass through the object, which is to be examined. The object, which is to be examined, comprises the contrast agent dispersion, which is a contrast agent with high atomic number. Device and method for X-ray fluorescence analysis of contrast agent dispersion, comprises an X-ray source (1) and a beam collimator (2). A radial arrangement of collimator blades (8) is oriented on the primary beam. The X-ray with small or vanishing angular deviation passes through a radial direction. The multiply scattered X-rays (9) are absorbed by the collimator blades. The collimated X-rays (3) pass through the object, which is to be examined. The object, which is to be examined, comprises the contrast agent dispersion, which is a contrast agent with high atomic number. The contrast agent dispersion stimulates the emission of X-rays with certain energy along the beam through the X-ray fluorescence. The radially outwardly extending X-rays of X-ray fluorescence passes through the arrangement of collimator blades and reflects from an arrangement of monochromator crystals. The crystal planes are arranged and molded relative to the collimator blades such that the condition for the reflection angle required for the reflection of X-rays of certain energy to the monochromator crystal is satisfied. The X-rays with dependent fluorescence energy are reflected by the contrast agents. The reflected X-rays are detected without spatial resolution by a simple large-scale X-ray detector. An independent claim is also included for an image formation by rotation of the device around an axis in the object and by displacement of the device perpendicular to this axis, comprising collecting data over the contrast agent dispersion by the rotation and displacement of the device around the object during the X-ray fluorescence analysis and producing images of the contrast agent dispersion using the data with known computer tomographic method.