Abstract: EXPERIMENTAL RESEARCH OF TREATING PROSTATIC HYPERTROPHY CASES WITH~(90)Sr/~(90)Y(β)INTRACAVITARY APPLICATORLi Zhi;Liu Zhijuan(Zhelimumeng Prostatic Hyperplasia Clinics,Tongliao 028000)(Zhelimumeng Hospital,Tongliao 028000)Cai Shanyu(China Institute of Atomic Energy, Beijing 102413)Abstract:On the basis of animal tests,125 cases of BPH with complete or imcomplete obstruction are treated by"urethra-type" 90Sr/90Y intracavitary applicators.Among them,105 cases are fully recov ered from the illness, 14 cases have notable effects,2 cases are improved and 4 cases have no effects.Animal tests and clinical experiments indicate that the atrophy of hyperplasia prostate tissue is taken place after irradiating by the 90Sr/90Y intracavitary applicator. Consequently,the urethra obstruction which lies to the prostate is released and the function of lower urethra is recovered.Doubtlessly,theβintracavitary irradiation for treating the BPH cases is a new and effective method.Keywords:~(90)Sr/~(90)Y(β) intracavitary applicator urethra obstruction prostatic hyperplasia