Fanning Brendan
'Apollonia', Ballinalea, Ashford, Co. Wicklow.
J Ir Dent Assoc. 2008 Aug-Sep;54(4):181-3.
The use of diagnostic reference levels (DRLs) is part of the optimisation process of radiation protection, in that it identifies practices that are in need of corrective action, resulting in dose reduction. Their use is provided for in Irish and European legislation. In this project, measurements were carried out at 42 of the 46 licensed intra-oral xray machines in Co. Wicklow using an Unfors Mult-0-Meter. The third quartile patient entrance dose for a maxillary molar was calculated at 2.31 mGy, and all the measurements were below the European DRL of 4 mGy. The effect of digital radiography was analysed. There is always scope for the optimisation of patient dose. To facilitate this, a DRL of 2.5 mGy (patient entrance dose) is suggested for Ireland.
诊断参考水平（DRLs）的使用是辐射防护优化过程的一部分，因为它能识别出需要采取纠正措施的操作，从而降低剂量。爱尔兰和欧洲的立法都规定了其使用。在该项目中，使用Unfors Mult - 0 - Meter对威克洛郡46台持牌口腔内X光机中的42台进行了测量。上颌磨牙的患者入口剂量第三四分位数经计算为2.31毫西弗，所有测量值均低于欧洲4毫西弗的诊断参考水平。分析了数字射线摄影的效果。患者剂量的优化始终存在空间。为便于此，建议爱尔兰采用2.5毫西弗（患者入口剂量）的诊断参考水平。
