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Crystal arranging method and probe thereof

A detector and crystal technology, applied in the field of crystal arrangement method and detectors, can solve problems such as limiting detector resolution, and achieve the effect of improving resolution

Active Publication Date: 2013-04-24
ZHONGSHAN MINFOUND MEDICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the smallest unit of a silicon photomultiplier corresponds to a pixel, that is, a scintillation crystal bar corresponds to an SPM signal unit, which means that the size of the SPM signal unit limits the resolution of the detector

Method used

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  • Crystal arranging method and probe thereof
  • Crystal arranging method and probe thereof
  • Crystal arranging method and probe thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0033] Embodiment 1: The exit surface 61 of the scintillation crystal block 6 is processed by a vacuum coating method, and a vacuum film is plated on half of the surface. The color of the film is black to prevent light signals from passing through and play a role in shading. After the exit surface 61 is processed, a light-shielding surface 611 and a non-light-shielding surface 612 are generated. Please refer to image 3 Shown.

Embodiment approach 2

[0034] Embodiment 2: The exit surface 61 of the scintillation crystal block 6 is treated by a paint spraying method, and half of the surface is sprayed. The sprayed color is black to prevent light signals from passing through and play a role in shading. After the exit surface 61 is processed, a light-shielding surface 611 and a non-light-shielding surface 612 are generated. Please also refer to image 3 Shown.

Embodiment approach 3

[0035] The third embodiment: the exit surface 61 of the scintillation crystal block 6 is processed by a polishing method, so that the light is diffusely reflected on the surface, and the light signal is prevented from passing through in a straight line, and the light is shielded.

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Abstract

The invention relates to a crystal arranging method and a probe thereof. A crystal is formed by array configuration of a plurality of crystal units, each crystal unit comprises a flicker crystal block and a flicker crystal block with a processed outgoing face, a portion of the processed outgoing face of the flicker crystal block is processed in a shading mode. The crystal arranging method comprises that upper and lower adjacent crystal units are arranged in a manner that the flicker crystal block and the processed flicker crystal block are mutually interval, and left and right adjacent crystal units are arranged in a manner that a shading face and a non-shading face of the outgoing face of the processed flicker crystal block are mutually interval. The crystal is adopted by the probe, and the probe comprises a silicon photomultiplier (SPM). Multiple signal units are arranged on the SPM, the signal units correspond to the crystal units one by one, and the signal units can receive light signals which are sent by the crystal units. The probe breaks through size limitation of signal units of an existing SPM, and under the condition that sizes of the signal units of the SPM are not reduced, and resolution ratio of the probe is greatly improved.

Description

Technical field [0001] The invention relates to the field of optoelectronic materials, in particular to a crystal arrangement method and a detector thereof. [0002] Background technique [0003] Scintillation crystal is a crystal that converts the kinetic energy of high-energy particles into visible light under the impact of X / γ-rays and high-energy particles. It is a key component of CT and PET imaging in imaging medicine. [0004] Positron Emission Tomography (PET, Positron Emission Tomography) is a development developed by applying computed tomography technology to the field of nuclear medicine following X-ray tomography (X-CT) and magnetic resonance imaging (MRI) technologies New large-scale medical equipment. It uses emissive isotopes closely related to the human body such as 11 C, 15 O, 13 N, 18 F and other nuclides that can generate positrons are used as tracers. It is a medical imaging device that understands the functional and metabolic state of the lesion through the ing...

Claims

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Application Information

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IPC IPC(8): G01T1/202
Inventor 赵永界苏志伟杨永鑫王瑶法王元吉张歌
Owner ZHONGSHAN MINFOUND MEDICAL EQUIP CO LTD
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