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首页> 外文期刊>Radiotherapy and oncology: Journal of the European Society for Therapeutic Radiology and Oncology >Assessment of a carcinogenic risk for treatment of Graves' ophthalmopathy in dependence on age and irradiation geometry.
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Assessment of a carcinogenic risk for treatment of Graves' ophthalmopathy in dependence on age and irradiation geometry.

机译:根据年龄和辐射几何形状评估治疗格雷夫斯眼病的致癌风险。

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摘要

In view of the probable carcinogenic risk due to the irradiation of Graves' ophthalmopathy in young patients the effective dose was assessed for two geometries. Adjusting the field to the conical outline of the orbit resulted in appreciable reduction in dose to uninvolved areas such as brain and bone marrow. In Leiden and in Essen the initial target dose was 20 Gy in 10 fractions of 2 Gy. Since 1996 the target dose in Essen was lowered to 10 fractions of 1.6 Gy with equal positive results. The combined effect of field optimization and 20% reduction in target dose has lowered the effective dose from 65 to 34 mSv. The attributable lifetime risk for fatal malignancies of 0.3% as a population average will be considerably reduced when the exposure occurs at older age.
机译:考虑到在年轻患者中由于格雷夫斯氏眼病的照射而可能致癌的风险,对两种几何形状的有效剂量进行了评估。将视场调整到圆锥形的视线轮廓会导致对未受累区域(例如大脑和骨髓)的剂量明显减少。在莱顿和埃森,最初的目标剂量是20 Gy,分为2 Gy的10分数。自1996年以来,埃森(Essen)的目标剂量降低至1.6 Gy的10倍,阳性结果相同。现场优化和目标剂量降低20%的综合作用已将有效剂量从65毫希沃特降低到34毫希沃特。当暴露于老年时,致命的恶性肿瘤的终生风险为人口平均水平的0.3%,将大大降低。

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