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二维半导体探测器阵列与免洗放射性铬胶片在调强放射治疗计划剂量验证中的应用比较 被引量:5

Comparison of Applying a 2-D Diode Detector Array and Radiochromic Film in Dosimetry Verification of Intensity Modulated Radiation Therapy
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摘要 [目的]比较两种放射剂量探测器(二维半导体阵列和放射性铬胶片)用于剂量分布测量的特性差异,探索和优化调强放射治疗(IMRT)计划验证与质量保证工作的规范及效率。[方法]分别应用该两种探测器对根据实际IMRT计划在模体上移植生成"归一调强野"和"合成调强野"验证计划进行剂量分布测量,比较两者之间及与计划计算的剂量分布差异。[结果]对同一个"归一调强野"验证计划:二维半导体阵列和放射性铬胶片测量的γ像素通过率分别为99.4%和95.0%;对相同IMRT计划的生成的"合成调强野"验证计划,放射性铬胶片测量的通过率为93.59%。[结论]两种剂量探测方法均方便易行,在对归一调强野验证计划的测量中均获得较满意的验证结果;同一IMRT计划的归一调强野与合成调强野验证结果可能有明显差异,建议适当提高归一调强野方式的IMRT计划验证的通过率指标,以更好地保证实际合成的IMRT治疗剂量分布的精确度。
出处 《中国肿瘤》 CAS 2008年第8期690-693,共4页 China Cancer
基金 卫生部/吴阶平医学基金课题[WKJ2005-3-006子课题(7)]
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参考文献7

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二级参考文献28

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共引文献74

同被引文献36

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