Gamma-ray imaging detector and system having same

Abstract

The invention provides a gamma ray imaging detector. The gamma ray imaging detector comprises a plurality of detector modules which are parallelly arranged in a fit manner; each detector module comprises a circuit board, a silicon photomultiplier array arranged on the circuit board and a crystal array; the silicon photomultiplier array comprises a plurality of silicon photomultipliers; the crystal array comprises a plurality of crystal units; the plurality of crystal units are coupled with the plurality of silicon photomultipliers; the radial length of sections of the crystal units coupled with the silicon photomultipliers is larger than the tangential length of the sections. The gamma ray imaging detector has the advantages of being high in space resolution ratio and signal noise ratio, wide in range of vision, and low in cost. The invention further provides a gamma ray imaging detector system.

Description

Technical field [0001] The invention relates to the technical field of gamma ray imaging, in particular to a gamma ray imaging detector and a system with the same. Background technique [0002] Traditional gamma-ray imaging detectors use scintillation detectors to detect gamma rays for imaging, and are widely used in the field of medical imaging, such as gamma cameras, single-photon computer emission tomography and positron emission tomography. [0003] The performance of the detector directly affects the quality of gamma-ray imaging, and ultimately affects the accuracy of disease diagnosis. Traditional gamma-ray imaging detectors usually use a scintillation crystal module coupled with a photodetector; the scintillation crystal faces the incident direction of gamma rays, and the photodetector is placed on the back of the scintillation crystal. The detector usually uses a strip-shaped crystal. It can be obtained from which strip-shaped crystal unit the ray is incident, and the posi...

AI Technical Summary

Problems solved by technology

The detector usually uses a long strip crystal, which can obtain the long strip crystal unit where the ray is incident, and can obtain the position coordinates of the ray in the axial and tangential directions, but cannot obtain the position coordinates of the ray in the radial direction

This design has a parallax effect on oblique incidence events, which makes the position judgment error of the response line larger

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