Montgomery A, Martin C J
Western Infirmary, Dumbarton Road, Glasgow G11 6NT, UK.
Br J Radiol. 2000 Oct;73(874):1083-90. doi: 10.1259/bjr.73.874.11271901.
Radiation exposure of paediatrics is of particular concern because of the greater health detriment. In this study, the application of patient dose reference levels to paediatric radiographic examinations has been investigated. The relationships between entrance surface dose and patient age and size parameters have been studied in three hospitals. The data have been used to derive conversion factors to describe relationships between doses for children of different ages. The usefulness of equivalent patient diameter, weight and age as variables relating to doses has been examined. Simple conversion factors in look-up tables have been derived that link doses for patients of a variety of ages and sizes for particular examinations. It is proposed that factors of this type could be applied to data for individual patients to allow a wider range of ages to be included in any group. This would enable sufficient dose data to be collected from non-specialist hospitals for comparison with reference levels. It would facilitate identification of hospitals where doses are higher so that changes could be made to radiographic practice.
由于对健康的损害更大，儿科的辐射暴露尤其令人担忧。在本研究中，已对患者剂量参考水平在儿科放射检查中的应用进行了调查。在三家医院研究了入射表面剂量与患者年龄和体型参数之间的关系。这些数据已用于推导转换因子，以描述不同年龄儿童剂量之间的关系。已检验等效患者直径、体重和年龄作为与剂量相关变量的有用性。已得出查找表中的简单转换因子，这些因子将特定检查中不同年龄和体型患者的剂量联系起来。建议将此类因子应用于个体患者的数据，以便在任何组中纳入更广泛的年龄范围。这将使能够从非专科医院收集足够的剂量数据，以便与参考水平进行比较。这将有助于识别剂量较高的医院，从而可以对放射检查实践进行改进。
