A pet machine crystal array assembly method

A technology of crystal array and assembly method, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of low efficiency, affecting the final performance of PET machines, and difficult to achieve uniformity and consistency, so as to achieve simple operation and avoid detection The problem of device efficiency and the effect of low cost
CN103033840BActive Publication Date: 2015-11-18CHINA ELECTRONICS TECH GRP NO 26 RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ELECTRONICS TECH GRP NO 26 RES INST
Publication Date
2015-11-18

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Abstract

The invention discloses a polyethylene terepthalate (PET) machine crystal array assembling method. The PET machine crystal array assembling method includes the following steps: S1, filling single crystals into a fixture with extrusion forming space in sequence; S2, assembling the single crystals to be in the shape of a basic crystal array unit by using optical cements; S3, adjusting the extrusion forming space of the fixture, and extruding basic crystal arrays which are filled into the extrusion forming space so as to form crystal arrays; and S4, enabling unnecessary optical cements to flow out from holes which are arranged in the fixture when the basic crystal arrays are extruded by the fixture. According to the PET machine crystal array assembling method, a square frame which is formed by two concave block components and an L-shaped block component is used for extruding the crystal arrays, and thus not only can the crystal arrays of various dimensions be assembled conveniently and efficiently, but also the single crystals can be conveniently spliced into the crystal arrays which are even in distribution and good in consistency. Therefore, the problems that crystals are uneven in arrangement and poor in aligning consistency in manually prepared crystal array are solved, and the detection efficiency of a PET machine in later stage preparation is improved significantly.
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Description

technical field

[0001] The invention relates to the technical field of positioning and assembly of a PET machine, in particular to a method for assembling a crystal array for a PET machine. Background technique

[0002] PET (Positron Emission Tomography, Positron Emission Tomography) is a non-invasive and harmless technique for measuring the three-dimensional density distribution of radiolabeled substances in patients. It has been widely used in medical diagnosis. It can observe the metabolism, cell proliferation, receptor distribution and blood perfusion of living tissues and lesions in a more subtle manner at the molecular level, and meets the needs of current clinical work and scientific research development at a higher level.

[0003] At present, the detector structure of PET machine is mainly composed of scintillation crystal array and photomultiplier tube array. The radioactive material emits rays and hits the scintillation crystal array and emits fluorescence. The pho...

Claims

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