##  [PET扫描](/cn/applications/medical/positron-emission-tomography)

# PET扫描

PET scanning is a gamma-based imaging technique that allows doctors to detect early signs of cancer, brain disorders and heart diseases by identifying changes in organs and tissues at cellular level. In a PET scan, the patient is injected with a radioactive substance and placed on a flat table that moves into a donut-shaped housing called gantry.

The gantry of a PET system contains several gamma ray detectors that require very precise temperature control to one another in order to generate a proper image. If one detector fails it will have a significant impact on the final image result.

![Positron Emission Tomography](/sites/default/files/styles/high_xs/public/fields/media.image.field_media_image/2025-04/Cooling-for-PET-Scanners-520x325.jpg.webp?itok=G2ZHdceu)

正电子发射断层扫描 （PET） 是一种基于伽马射线的影像技术，它能够使医生通过在细胞水平上识别器官和组织的变化来检测癌症、脑部疾病和心脏病的早期迹象。在 PET 扫描中，患者被注射放射性物质，并被放置在一个平台，之后平台会移动到一个称为龙门架（gantry）的圆环形外壳中。

PET 系统的机架包含多个伽马射线探测器，它们都需要非常精确地控制温度以生成正确的图像。如果一个检测器出现故障，将对最终影像结果产生重大影响。

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液体冷却解决方案

Nextreme 系列能够以 ±0.1°C 的温度精度将系统冷却至远低于环境温度，因而能够支持 PET 扫描系统的冷却需求。与以前的型号相比，Nextreme 系列是新一代循环式冷却器，噪音更小，能耗更低。

[查找 Nextreme™ 循环冷却器](/cn/products/liquid-cooling-systems/nextreme-recirculating-chillers)

阅读相关应用笔记：
[PET 和 SPECT 扫描仪的液体冷却选项](/cn/thermal-technical-library/application-notes/liquid-cooling-options-pet-and-spect-scanners)
[医用X射线影像设备冷却](/cn/thermal-technical-library/application-notes/cooling-medical-x-ray-imaging-equipment)

## Related Content

#### [Nextreme™ 性能系列](/cn/products/liquid-cooling-systems/nextreme-recirculating-chillers)

![NRC Chiller Family](/sites/default/files/styles/high_xs/public/fields/media.image.field_media_image/2022-08/NRC-Chiller-Family-525x325.png.webp?itok=JrsR4sSb)

下一代循环液体冷却器

#### [PET 和 SPECT 扫描仪的液体冷却选项](/cn/thermal-technical-library/application-notes/liquid-cooling-options-pet-and-spect-scanners)

![Liquid Cooling Options for PET an SPECT Scanners](/sites/default/files/styles/high_xs/public/fields/media.image.field_media_image/2025-04/Tark-TS-Liquid-Cooling-Options-for-PET-and-SPECT-Scanners-2.jpg.webp?itok=aJ_5Mj1D)

核医学使用放射性物质对身体进行成像并治疗疾病。

#### [冷却医用 X 射线成像设备](/cn/node/879)

![Medical-X-Ray-Custom-solutions](/sites/default/files/styles/high_xs/public/2020-07/Medical-X-Ray-Custom-solutions-LTS-01.png.webp?itok=xv1kCdeG)

医用 X 射线成像系统旨在拍摄患者体内的照片，是一种重要的检测设备。

**Original URL:** https://tark-solutions.com/cn/applications/medical/positron-emission-tomography