Abstract: THE MEASUREMENT OF PHOSPHORUS RELEASE RATE FOR MEDICAL ~(32)P LABELLED GLASS MICROSPHERES Zhai Shengting；Wang Jiany un；Wang Hongyuan（Nuclear power Institute of China,Chengdu 610005）ABSTRACT The measurement methods of phosphorus release rate for medical~(32)P labelled glass micrcospheresare described．The definition of phosphor us release rate is also discussed．The measuring results indi-cate that the phosphorus release rate is less than 0．01％.Key words ~(32)P labelled glass microspheres phosphorus release rate measurement