The Principle and State-of-Art Facilities for PET

Since the late 20th century, Positron Emission Tomography (PET) scanners and their hybrid scanners (PET/CT and PET/MRI) offer a path to detect cancer. In this research, the PET scan will be introduced and discussed in multiple dimensions, mainly to explain the principle of PET scan, the state-of-art of PET scans, and the future of PET scans. According to the analysis, from the time that the PET scanner is invented, it not only had a better image quality but also had more functions. It is believed that an intelligent non-radioactive scanner will be achieved in the future due to the development of MRI and artificial intelligence. The main reason for conducting this research is to understand the mechanisms of PET as well as investigate the way to improve the technology itself to avoid the limitations it poses. Overall, these results shed light on guiding further exploration of the next generation of PET scans (e.g., Hybrid PET machines and machine learning).