Hansson U, Johansson K A, Horiot J C, Bernier J
Radiation Physics Department, University of Gothenburg, Sahlgren Hospital, Sweden.
Radiother Oncol. 1993 Nov;29(2):85-90. doi: 10.1016/0167-8140(93)90230-6.
The Radiotherapy group of the European Organisation for Research and Treatment of Cancer (EORTC-RT) has been performing quality assurance with mailed TL dosimetry since 1986. The programme consists of therapy machine output checks, in vivo measurements, and dosimetry for brachytherapy. The therapy machine output checks have revealed a few large deviations (greater than 7%) between EORTC-measured and institute-stated dose, but also shown an improvement in the dosimetry of the participating institutes as a result of consecutive mailings. The use of in vivo dosimetry with mailed TLD has proven that it is feasible to detect deviations of +/- 5%. The results have shown deviations within +/- 5% for dosimeters located well within the radiation field for internal measurements in the pelvic region. Dosimetry of brachytherapy has been performed for low dose rate 192Ir sources. Differences of 14% can be seen between the participating centres.
自1986年以来，欧洲癌症研究与治疗组织放疗组（EORTC-RT）一直通过邮寄热释光剂量测定法进行质量保证。该计划包括治疗机器输出检查、体内测量和近距离放射治疗剂量测定。治疗机器输出检查发现，EORTC测量的剂量与机构声明的剂量之间存在一些较大偏差（大于7%），但连续邮寄的结果也显示，参与机构的剂量测定有所改善。使用邮寄热释光剂量计进行体内剂量测定已证明，检测±5%的偏差是可行的。结果显示，位于盆腔区域内部测量辐射场内的剂量计偏差在±5%以内。已对低剂量率192Ir源进行了近距离放射治疗剂量测定。参与中心之间可看到14%的差异。
