五十年来,回旋加速器有了很大发展。由普通回旋加速器,逐步发展研制成了调频回旋加速器、等时性回旋加速器等。随着回旋加速器本身的发展,其应用日益广泛。近年来回旋加速器在核医学领域中的应用发展迅速,是一个引人注目的方向。用回旋加速器来生产核医学所需的短寿命、缺中子同位素;用作为快中子治癌的中子源和用作活化分析工具,是回旋加速器在核医学领域中应用的主要方面。 For fifty years, cyclotrons have greatly developed. By the ordinary cyclotron, developed into a progressive modulation cyclotron, isochronous cyclotron and so on. With the development of cyclotron itself, its application is increasingly widespread. In recent years, the application of cyclotron in nuclear medicine has been developing rapidly, which is an attractive direction. The use of cyclotrons to produce short-lived and missing neutron isotopes for nuclear medicine; their use as neutron sources for fast neutron cancers and as activation and analysis tools are major aspects of cyclotron applications in nuclear medicine.