编者按:核医学是利用先进的显像设备和具有靶向结合功能的放射性药物进行临床诊断、疾病治疗以及生物医学研究的一门学科,是核科学技术在医学中应用的重要新兴领域。核医学显像是以核素示踪技术为基础,以放射性浓度为重建变量,以组织吸收功能的差异作为诊断依据。将放射性药物引入机体后,探测并记录引入体内靶组织或器官的放射性示踪剂发射的γ射线或γ光子,以时间-放射性活度曲线或影像的方式显示出来,不仅可以显示脏器或病变的位置、形态及大小 Editor’s Note: Nuclear medicine is a discipline that uses advanced imaging equipment and radiopharmaceuticals with targeted binding functions for clinical diagnosis, disease treatment, and biomedical research. Nuclear medicine is an important emerging field for the application of nuclear science and technology in medicine. Nuclear medicine imaging is based on radionuclide tracer technology, radioactive concentration as a reconstruction variable, the difference in tissue absorption as a diagnostic basis. After radiopharmaceuticals are introduced into the body, the gamma-ray or gamma photons emitted by the radiotracer introduced into the target tissues or organs of the body are detected and recorded and displayed as a time-activity curve or image not only for organs or lesions The location, shape and size