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利用射野照相验证片对胸部肿瘤放疗摆位误差的分析 被引量:1

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摘要 目的利用射野照相和Photoshop软件对胸部肿瘤适形放射治疗进行位置验证,分析摆位误差,为临床靶区(CTV)外扩计划靶区(PTV)提供参考依据。方法 30例胸部肿瘤患者,每位患者在首次及每周一治疗摆位前拍摄正、侧位射野照相各一张,与数字重建图像进行骨性匹配,测量射野中心点在X、Y、Z方向的位移值。结果通过对150张次射野片对比、分析,摆位误差X为(2.22±2.21)mm,Y为(3.69±2.47)mm,Z为(3.38±2.24)mm;获取CTV外扩的边界:X为5.99 mm,Y为9.11mm,Z为8.33 mm。结论通过对摆位误差数据的分析,为胸部肿瘤的适形放疗提供CTV外扩值,提高放射治疗的准确性。
机构地区 甘肃肿瘤医院
出处 《卫生职业教育》 2014年第15期133-135,共3页 HEALTH VOCATIONAL EDUCATION
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