Detector based on liquid-cooling plate structure, and positron emission tomography system

A detector and liquid cold plate technology, applied in the field of nuclear medicine imaging, can solve the problems of low detection efficiency, achieve the effect of improving sensitivity, improving imaging quality, and ensuring structural stability

Active Publication Date: 2018-08-03
JIANGSU SINOGRAM MEDICAL TECH CO LTD
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  • Application Information

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Problems solved by technology

Usually, the signal amplification device used in the traditional PET system is PMT (Photomultiplier tu

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  • Detector based on liquid-cooling plate structure, and positron emission tomography system
  • Detector based on liquid-cooling plate structure, and positron emission tomography system
  • Detector based on liquid-cooling plate structure, and positron emission tomography system

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Embodiment Construction

[0053] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0054] The signal amplification device is an important part of the detector, which is used to convert the visible light signal emitted by the crystal into an electrical signal. The working conditions and sensitivity of the signal amplification device have an important impact on the detection efficiency of the detector. The signal amplification device used in the existing detectors is a photomultiplier tube (Photomultiplier tube, PMT), but the PMT needs to work under high voltage conditions, and the detection efficiency is low, which affects the imaging quality of the PET system. Solid-state silicon photomultiplier (Silicon Photomultipliers, SiPM) is a new high-sensitivity optical signal amplification device. Compared with traditional PMTs, SiPM...

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Abstract

The invention discloses a detector based on a liquid-cooling plate structure, and a positron emission tomography system, which belong to the technical field of nuclear medicine imaging. The detector based on the liquid-cooling plate structure comprises a liquid-cooling plate, at least two SiPM circuit board assemblies, and crystals, wherein each SiPM circuit board assembly comprises a circuit board fixed on the liquid-cooling plate by means of screws and SiPM chips welded on the circuit board; a first fixing plate and a second fixing plate used for arranging screws are positioned on opposite edges of each circuit board; a groove matched with the first fixing plate in shape is formed in the second fixing plate; the crystals cover the SiPM chips; and the liquid-cooling plate is used for charging a cooling liquid to reduce the operating temperature of the at least two SiPM circuit board assemblies. The detector provided by the invention adopts the SiPM to improve imaging quality, is ingenious in circuit board connection, and positions the circuit boards in a narrow space precisely, thereby ensuring the structural stability of the detector; and the detector utilizes the liquid-coolingplate to reduce the operating temperature of the SiPM circuit board assemblies, thereby ensuring the sensitivity of the SiPM chips.

Description

technical field [0001] The invention relates to the technical field of nuclear medical imaging, in particular to a detector based on a liquid-cooled plate structure and a positron emission tomography system. Background technique [0002] In the field of medical imaging, PET (Positron Emission Tomography, Positron Emission Tomography) system is playing an increasingly important role as a functional imaging system. PET technology is an imaging technique that can non-invasively display human organ function and metabolism. Early diagnosis of tumors and other diseases can be realized by using PET technology. Specifically, the substances necessary for biological life metabolism (such as glucose, protein, nucleic acid, fatty acid) are labeled with short-lived radionuclides (such as 18F, 11C, etc.), and the labeled substances are injected into the human body. The radiation emitted by radionuclides in metabolites is received by PET technology, and an image of the distribution of me...

Claims

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Application Information

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IPC IPC(8): G01T1/29A61B6/00H01J43/04
CPCA61B6/4208G01T1/2985H01J43/04
Inventor 于庆泽
Owner JIANGSU SINOGRAM MEDICAL TECH CO LTD
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