X—刀治疗前螺旋CT定位扫描成像 ,是X—刀定位、定向放射治疗体架对病人内病灶模拟定位的影像依据 ,是X—刀对体内肿瘤准确实施放射治疗的根本依据。我院自 2 0 0 1年3月至今。 310例行X—刀模拟定位的螺旋CT扫描成像 ,其扫描方法及体会报告如下。1　材料与方法1 1　一般资料　 X-knife spiral CT scan imaging before and after imaging, is X-knife positioning, directional radiotherapy frame on the patient’s intramural lesions simulated imaging based on the X-knife is the basis for accurate implementation of radiation therapy in vivo tumors. Our hospital since March 2001 so far. 310 routine X-knife simulation of the position of the spiral CT scan imaging, scanning method and experience report as follows. 1 Materials and methods 1 1 General information