颅内病变X-刀治疗计划设计

Treatment Planning of X-Knife Treatment for Intracranial Lesions

目的:本文着重介绍我们进行X-刀治疗计划设计的基本途径和实践经验。设备和方法:用美国RSA公司X-刀治疗计划系统(TPS),从1995年10月至96年12月共对120例病人进行计划设计,设计时对下列参数进行选择:等中心位置、机臂旋转范围、治疗床转角、限光筒口径和照射剂量。结果:X-刀治疗颅内病变(直径≤4cm)时,剂量分布可保证病灶受到足量致死照射,同时周围正常组织和结构受量限制到最低限。结论:治疗计划设计是X-刀手术重要环节。

Objective: This paper introduced the essential methods and clinical experiences of X -Knife treatment Planning. Materials and Methods: From October 1995 to December 1996, 120 patientswere treated with American RSA X-Knife 2.1 Treatment Planning System (TPS). We selectd andadjusted the following parameters: isocenter location, gantry arc rotation interval, couch angle,collimator field size and radiation dosage. Results: this planning could make equal distribution of dosageand ensured the lesions be irradiated sufficiently but the surrounding healthy tissue wasminimal. Conclusion: Making a good treatment plan is an essential for X-Knife treatment.