STUDY ON THE PREPARATION OF ~(67)Ga-C_(60)(OH)_x

67Ga C 60 (OH) x has been prepared by the 67 GaCl 3 and C 60 (OH) x . The influence of pH value, reaction time, temperature and mass concentration of the C 60 (OH) x on the labeling yield is studied. The stability of 67 Ga C 60 (OH) x is examined at 37 ℃ . The results show that labeling conditions have minor influence on the labeling yield in this work. The labeling yields are over 95% at the conditions under study. The radiochemical purity of 67 Ga C 60 (OH) x solution is kept at 90% after 200 h.