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【摘要】目的：对三维适形放疗(3-Dimensional Conformal adiatherapy，3DCRT)前的增强CT定位扫描技术进行研讨， 以期获得更好的图像质量及病变靶区的精确定位。方法：对恶性肿瘤1180例患者行三维适形放疗前的肿瘤增强CT定位，然后通过DICOM数字格式图像将所获得的图像传输至WIMRT治疗计划系统，通过重建靶区及正常组织的图像，对病变进行精确定位，制定放疗计划，并在直线加速器上实施。结果：1180例肿瘤患者均定位准确，病变组织明显缩小，周围正常组织损伤较少，符合3DCRT的要求。结论：增强CT是3DCRT 中提供精确定位的方法之一，对提高恶性肿瘤患者的放疗效果有重要价值。
【关键词】三维适形放疗(3DCRT)；增强CT；定位；扫描技术 放疗
【中国分类号】R734.2【文献标识码】A【文章编号】1044-5511(2011)10-0266-02
【Abstract】objective: To observe the enhanced CT in localization the target for the 3-Dimensional Conformal adiatherapy,(3DCRT) , so as to obtains the well picture quality and accuracy of the pathological change target lesion.Method: To in front of the m alignant tumor 1181 example patient line of three dimensional suitable shape radiotherapy tumor CT localization, again the image transmission WIMRT treatment plan system which obtains through the DICOM numeral form image, carries on the precise radiotherapy plan through the reconstruction target area and normal tissue's image to the patient, and implements on the linear accelerator ......
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