随着科学技术的发展 ,医学影像设备也日新月异的发展 ,CT、MRI等的分辨率大大提高了 ,目前可以说达到解剖学成像的极限。不同于CT、MRI等影像技术 ,PET显像从分子水平反映肿瘤组织的生化变化和代谢状态 ,对肿瘤的诊断、治疗评价、复发的监测及淋巴结转移灶的诊断治疗具有重要作 With the development of science and technology, the development of medical imaging equipment is also progressing with each passing day. The resolution of CT, MRI and the like has been greatly improved. At present, the limit of anatomic imaging can be reached. Different from CT, MRI and other imaging techniques, PET imaging reflects the biochemical changes and metabolic status of tumor tissue from the molecular level. It is important for diagnosis, treatment evaluation, recurrence monitoring and diagnosis and treatment of lymph node metastases