Fogli J, Carpentieri C, Del Guerra A, Fantacci M E, Marchi A, Marzulli V, Tofani A
Physics Department and INFN, University of Pisa, Largo Bruno Pontecorvo, 3, 56127 Pisa, Italy.
Radiat Prot Dosimetry. 2008;129(1-3):227-30. doi: 10.1093/rpd/ncn078. Epub 2008 Mar 28.
The work presented here was developed in the framework of the SENTINEL Project and is devoted to the analysis of dental radiology dosimetric data. The procedure of data processing allows the analysis of some important aspects related to the protection of the patient and the staff because of the position of the operators near the patient and their exposure to the radiation scattered by the patient. Dental radiology data was collected in an Italian hospital. Following the Italian quality assurance (QA) protocols and suggestions by the leaders of the SENTINEL Project, X-ray equipment performances have been analysed in terms of: kVp accuracy, exposure time accuracy and precision, tube output, dose reproducibility and linearity, beam collimation, artefacts and light tightness. Referring to these parameters the physical quality index (QI) was analysed. In a single numerical value between 0 and 1, QI summarises the results of quality tests for radiological devices. The actual impact of such a figure (as suggested by international QA protocols or as adopted by local QA routine) on the policy of machine maintenance and replacement is discussed.
本文所展示的工作是在SENTINEL项目框架内开展的，致力于牙科放射剂量学数据的分析。由于操作人员靠近患者的位置以及他们暴露于患者散射的辐射中，数据处理程序有助于分析与患者和工作人员防护相关的一些重要方面。牙科放射学数据是在一家意大利医院收集的。按照意大利质量保证（QA）协议以及SENTINEL项目负责人的建议，对X射线设备的性能进行了以下方面的分析：千伏峰值（kVp）精度、曝光时间精度和精密度、管输出、剂量再现性和线性、束准直、伪影和不透光性。参照这些参数对物理质量指标（QI）进行了分析。QI在0到1之间的单个数值中总结了放射设备质量测试的结果。讨论了这样一个数值（如国际QA协议所建议或当地QA常规所采用）对机器维护和更换政策的实际影响。
