POSITRON EMISSION TOMOGRAPHY DETECTOR ELEMENTS USING DIFFERENT SIZES OF PHOTOMULTIPLIER TUBES

摘要

A positron emission tomography detector module that includes an array of optically isolated crystal elements and photomultiplier tubes that receive light emitted from the array of crystal elements and are arranged to cover the array of crystal elements. The photomultiplier tubes include photomultiplier tubes having two different sizes arranged in various patterns that minimize the number of edges. The axial extent of each detector module is at least three times longer than the other axis of the detector module.