三维适形放射治疗肝转移瘤——附10例报告

The therapeutic effect of 3D-conformal radiotherapy on metastatic hepatic cancer

目的 探讨三维适形放射治疗对肝转移瘤的治疗效果。 方法 1997/ 0 9～ 2 0 0 0 / 0 4采用立体定向适形放射治疗 10例肝转移瘤 (1～ 5个转移灶 )。肿瘤的临床靶体积 (CTV)为 0 .6cm3 ～ 2 32cm3(平均 4 1.9cm3 ) ,计划靶体积 (PTV)周边剂量为每次照射 3.96～ 7.0Gy(平均 5 .2 6Gy) ,PTV中心剂量为每次照射 6 .3～ 10 .88Gy(平均 7.89Gy) ,每天一次 ,每周 5次 ,共 5～ 8次。 结果 病人一般状况的计分标准 (KPS) :术前 2 0～ 90分 (5 4± 2 5 .9分 ) ,术后 30～ 10 0分 (74± 2 3.9分 )。实体瘤疗效标准 :完全缓解(CR) :2例 ;部分缓解 (PR) :4例 ;无变化 (NC) :3例 ;进展 (PD) :1例。

Ojective To evaluate the therapeutic effect of conformal radiotherapy on metastatic hepatic cancer. Methods 10 cases of metastatic hepatic cancer (1 to 5 metastatic focus respectively) were treated with stereotactic radiotherapy from Septermber 1997 to April 2000. The clinical target volume(CTV) of tumor ranged from 0.6cm 3 to 232cm 3 (the mean 41.9cm 3), peripheral irradiation doses of planning target volume (PTV) ranged from 3.96Gy to 7.00Gy(the mean 5.26Gy)each time, cential irradiation doses of PTV were 6.3Gy～10.88Gy (the mean 7.89Gy) each time, once a day for 5～8 times totally. Results No patient died during therapy. KPS of patients normal condition were 20～90(54±25.90) before treatment and 30～100 (74±23.90) after treatment. Effect of entity tumor were as follows completely relaxed (CR) in two cases, partly relaxed (PR) in four cases, no change (NC) in three cases, progressed (PD) in one case. During follow-up period tasting 2 to 28 months 90% of the tumors were controlled (no progressive disease). 60% fo the tumors decreased in size or disappeared. Conclusions Stereotactic radiotherapy has better therapeutic effects on cases of metastatic hepatic cancer.