Scintillator block containing absorbing x-ray beams and X-ray detector array containing such a scintillator block

摘要

1. A scintillator unit (2), comprising: a matrix of pixels (3) of a scintillator, each of the pixels of the scintillator having an upper surface (27), a lower surface (31) and side surfaces (29), and the pixels of the scintillator are arranged so that the side the surfaces of neighboring scintillator pixels face each other; an X-ray absorbing shell (13) containing an electrically insulating, highly X-ray absorbing material, the X-ray strongly absorbing material having an atomic number greater than 50; wherein the X-ray absorbing shell (13) is located on the lower surface (31) of the pixels ( 3) scintillator. 2. The scintillator block according to claim 1, wherein the highly X-ray absorbing material contains bismuth oxide. Scintillator block according to one of claims. 1 or 2, in which the absorbing x-ray shell contains from 20 to 70 vol. % highly X-ray absorbing material. 4. The scintillator block according to claim 1, wherein the X-ray absorbing shell contains particles of highly X-ray absorbing material, the particles being incorporated into a binder. The scintillator block according to claim 4, wherein 90% of the particles have a size between 1 and 50 microns. The scintillator block according to claim 4, in which the binder material is an epoxy resin. The scintillator block according to claim 1, wherein the X-ray absorbing shell covers at least 80% of the bottom surface of each of the scintillator pixels. The scintillator block according to claim 1, wherein the separation gaps between adjacent scintillator pixels are at least partially filled with weakly absorbing ren