目的 :体部肿瘤立体定向放疗的研究。方法 :1997年 5月— 1998年 12月期间治疗 32例共 35个病灶 ,根据病变大小进行适形立体定向放疗 ,射野一般 5— 7个 ,治疗次数 3— 7次 ,治疗间隔 1— 3天 ,每次治疗周边剂量45 0— 10 0 0cGy ,总量 1890— 34 2 0Gy。结果 :32例 35个病灶根据CT复查肿瘤退缩情况确定CR为 2 8 6 % ,PR为31 4% ,总有效率为 6 0 %。 1年以上生存率为 5 8 3%。结论 :立体定向放射治疗体部肿瘤特别是那些较小的孤立的转移性肿瘤 ,是一种肿瘤局部控制好、疗程短、疗效显著的新疗法。此外减少临近重要组织的剂量有助于降低正常组织副作用的发生率 Objective: To study the stereotactic radiotherapy of body tumors. Methods: Between May 1997 and December 1998, 32 cases were treated with 35 lesions. According to the size of the lesions, stereotactic stereotactic radiotherapy was performed. Radiotherapy was generally performed in 5 to 7 radiotherapy sessions. The frequency of treatment was 3 to 7 times. The treatment interval was 1 to 3 Day, each treatment peripheral dose 45 0-10 0 cGy, total 1890-34 2 0Gy. Results: According to CT retrospective study, 32 cases of 35 lesions were found to have CR of 286%, PR of 31 4% and total effective rate of 60%. The survival rate over 1 year was 583%. Conclusion: Stereotactic radiation therapy of body tumors, especially those with smaller solitary metastatic tumors, is a new therapy with locally controlled tumor, short course of treatment and significant curative effect. In addition, reducing the dose adjacent to important tissues helps to reduce the incidence of side effects in normal tissues