Vargas Castrillón S, Cutanda Henríquez F
Laboratorio de Metrología de Radiaciones Ionizantes, CIEMAT, Avda Complutense, 22, 28040 Madrid, Spain.
Radiat Prot Dosimetry. 2011 Sep;147(1-2):247-9. doi: 10.1093/rpd/ncr302. Epub 2011 Jul 5.
Staff occupational exposure for (18)F-FDG studies has been assessed. For this purpose, different detectors, all traceable to PTB standards, have been used. Measurements were carried out in different working areas in the facility for different procedures and 400 MBq per patient standard injected activity. A radiological map of the patient lying on the couch was obtained; the largest dose rate result was obtained in contact with the patient's abdomen. The maximum dose to the most exposed staff member for this position is 3.6 mSv y(-1), under some conservative assumptions. A typical value would be 0.9 ± 0.3 mSv y(-1) close to the abdomen, taking into account staff rotations. These results have been obtained from a sample of 50 patients and average values have been statistically tested. Particularly, a negligible probability of reaching 20 mSv in a year (assuming no incidents or contamination) was obtained (P < 0.01). Annual dose received by personnel lies well within the recommended limits (International Commission on Radiological Protection), these measurements help to optimise working procedures in the facility.
已对工作人员在进行（18）F - FDG 研究时的职业暴露情况进行了评估。为此，使用了所有可追溯至德国物理技术研究院（PTB）标准的不同探测器。在该设施的不同工作区域针对不同程序以及每位患者 400 MBq 的标准注入活度进行了测量。获取了躺在检查床上患者的辐射剂量分布图；在与患者腹部接触时获得了最大剂量率结果。在一些保守假设下，该位置受照射最严重的工作人员的最大年剂量为 3.6 mSv y⁻¹。考虑到工作人员的轮岗情况，靠近腹部的典型值为 0.9 ± 0.3 mSv y⁻¹。这些结果来自 50 名患者的样本，且对平均值进行了统计检验。特别地，得出在一年中达到 20 mSv 的概率可忽略不计（假设无事故或污染）（P < 0.01）。工作人员所接受的年剂量远在推荐限值（国际放射防护委员会）之内，这些测量有助于优化该设施的工作程序。
