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与超声、CT、NMR等现代化诊断工具相比,核医学的特点是采用核素,进行示踪实验。这些试剂参与体内或细胞内的生化、生理过程,因而能够显示脏器或脏器局部的功能,探讨疾病的病因,判断疾病的进展程度,与非核医学方法互相补充,为防治疾病做出贡献。因此,核素试剂的创制是核医学发展的关键,这类试剂的研制状况直接反映核医学的水平。以下仅以应用于心、脑的一些较突出的试剂为例,来说明放射性试剂研制工作的近况及其对核医学的推动作用。
Compared with modern diagnostic tools such as ultrasound, CT, and NMR, nuclear medicine is characterized by nuclide and tracer experiments. These reagents are involved in the biochemical and physiological processes in vivo or in the cells and thus can display the functions of organs or organs, explore the etiology of diseases, judge the progress of diseases, complement each other with non-nuclear medicine methods, and contribute to prevention and treatment of diseases. Therefore, the creation of radionuclide reagents is the key to the development of nuclear medicine. The development of such reagents directly reflects the level of nuclear medicine. The following is only applied to the heart, brain, some of the more prominent reagents, for example, to illustrate the development of radioactive reagents and its work on nuclear medicine to promote the role.