Cooling system of positron emission tomography scanner

Abstract

The invention discloses a cooling system of a positron emission tomography scanner. The positron emission tomography scanner comprises a peripheral electronics plate, a detector module and a bottom electronics plate; the cooling system comprises a cooling device, a peripheral cooling air channel, an inner chamber cooling air channel and a bottom cooling air channel; the inner chamber cooling air channel is a chamber body and comprises an air inlet channel and an air return channel; the peripheral electronics plate is located in the peripheral cooling air channel; the detector module is located between the air inlet channel and the air return channel; the bottom electronics plate is located in the bottom cooling air channel; the cooling device is used for conveying cooled air flow to the peripheral cooling air channel, the inner chamber cooling air channel and the bottom cooling air channel so as to cool the peripheral electronics plate, the detector module and the bottom electronics plate. According to the cooling system of the positron emission tomography scanner, ventilation cooling is performed on the peripheral electronics plate and the bottom electronics plate, the low-temperature and stable inner chamber cooling air channel is provided for the detector module, and accordingly the stability and the imaging quality of the system are improved.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a cooling system for a positron emission tomography scanner. Background technique [0002] Positron emission tomography plays a huge role in today's medical diagnostics. Positron emission tomography uses positron nuclide-labeled glucose and other human metabolites as imaging agents, and uses detectors to detect the uptake of imaging agents by lesions to reflect their metabolic changes, thereby providing clinical information on biological metabolism of diseases. Its imaging principle is: a positron emitted when the positron nuclide decays combines with free electrons in human tissue and annihilates, and transforms into two gamma photons with opposite directions and energy of 511KeV each. When the pair of gamma photons is received simultaneously by the scintillation probes arranged oppositely on both sides of the emitter, it is determined that the nuclide is located on...

AI Technical Summary

Problems solved by technology

Nowadays, common ventilation cooling is commonly used, that is, the air directly drawn into the scanning room takes away the heat inside the machine. This cooling method is directly affected by the temperature fluctuation of the scanning room, and it is difficult to maintain the stability of the system working temperature. At the same time, it is easy to Dust and impurities in the environment are brought into the detector, affecting the imaging effect and system stability

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