HIGH RESOLUTION HIGH OUTPUT MICROCHANNEL BASED RADIATION SENSOR

摘要

a microchannel phosphor screen for converting radiation, such as X-rays, into visible light. The screen includes a planar surface, which can be formed from glass, silicon or metal, which has eteched therein a multiplicity of closely spaced microchannels having diameters of the order of 40 microns or less. Deposited within each of the microchannels is a multiplicity of phosphors which emit light when acted upon by radiation. The dimensions of the microchannel and the phosphors and the relationship between the microchannels and the phosphors is optimized so that the light output compares favorably with lower resolution non microchannel based scintillation screens. A photomultipier can be integrated with th eX-ray detector so as to provide an enhanced output for use with low level X-ray of for cine or fluoroscipy applications.