PET探测器和扫描结构的发展

Development of PET Detector and Scan Structures

正电子断层成像(PET)技术是一门新兴的核医学成像技术,能够提供生理代谢水平的功能成像,在疾病诊断,病理研究,药物研发等多个方面具有广泛的应用。PET技术的核心是探测器和扫描结构设计。扫描结构有环形探测器-静态扫描、环形探测器-动态扫描、平板探测器-静态扫描,平板探测器-动态扫描等多种形式。探测器经历了PMT耦合单块晶体、PMT耦合多块晶体、PSPMT耦合晶体阵列、SPM耦合晶体阵列等多种结构。从1983年开始从事医用PET研究,本文通过回顾先后开发的多台PET机器,描述PET探测器和扫描结构的发展。

Positron emission tomography technology is an emerging nuclear medicine imaging technique that can provide the physiological metabolic level of functional imaging, has wide application in many fields, such as disease diagnosis, pathology research, and drug research and so on. The core of PET technology is detector and scan structures design. Scanning structures include ring-static scanning, ring-dynamic scanning, flatbed-static scanning, flatbed-dynamic scanning and so on. A variety of detector structures have developed： PMT coupled to a single crystal, PMT coupled multi-block crystals, PSPMT coupled crystal array, SPM coupled crystal array and so on. The author began to engage in medical PET studies from 1983, this paper reviews several PET machines that author has developed, and describe the development of the PET detector and scan structures.