Detector for positron emission imaging equipment, and positron emission imaging equipment

Abstract

The invention provides a detector for positron emission imaging equipment, and positron emission imaging equipment. The detector includes a scintillation crystal and at least one photoelectric sensor array, wherein the scintillation crystal is an integrated scintillation crystal, and is provided with a through hole; the through hole is used for accommodating an object waiting for imaging; the photoelectric sensor array is coupled with the scintillation crystal, and is used for detecting a visible photon which is generated when a gamma photon and the scintillation crystal react; and the gamma photon is generated through positron annihilation effect which occurs in the object waiting for imaging. The detector for positron emission imaging equipment enables the positron emission imaging equipment using the detector to be high in positioning accuracy of the gamma photon, to be high in sensitivity, to be weak in edge effect and to be low in mechanical design difficulty.

Description

technical field [0001] The invention relates to the field of positron emission imaging, in particular to a detector for a positron emission imaging device and the positron emission imaging device. Background technique [0002] The full name of positron emission imaging is Positron Emission Computed Tomography (PET). The main means of clinical diagnosis. [0003] In traditional positron emission imaging equipment, a plurality of square detectors (including scintillation crystals, photoelectric sensors, etc.) are generally spliced ​​into a circular or approximately spherical detector system through a mechanical structure to detect gamma photons. Specifically, each scintillation crystal (or scintillation crystal array) of a traditional positron emission imaging device is coupled with a photosensor to form an independent detector, and multiple independent detectors are spliced ​​together through a complex mechanical structure to form a positron A detector system for an emissio...

AI Technical Summary

Problems solved by technology

(1) Since the detectors are spliced ​​together, there is a certain position error in the entire detector system, which has a certain impact on the positioning accuracy of gamma photon pairs, thereby reducing the spatial resolution of the positron emission imaging device

(2) Affected by factors such as the gap between the detectors and the wall thickness of the packaging box, the crystal filling rate will decrease, resulting in the loss of some photon signals, which will reduce the sensitivity of the positron emission imaging equipment

(4) Since the detectors need to be spliced ​​together through a complex mechanical structure, problems such as the support, coordination, and alignment of the detectors need to be solved when designing the mechanical system, resulting in the mechanical design of the positron emission imaging equipment. Difficult and costly

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