Kostova-Lefterova D, Vassileva J
National Centre of Radiobiology and Radiation Protection, Sofia, Bulgaria.
Radiat Prot Dosimetry. 2011 Sep;147(1-2):156-9. doi: 10.1093/rpd/ncr327. Epub 2011 Aug 8.
The purpose of this study was to explore the frequency of paediatric computed tomography (CT) examinations in several hospitals in Bulgaria and to assess the current practice. The standard forms provided by the International Atomic Emergency Agency for survey of the paediatric CT practice were used. Six hospitals provided data on frequency of paediatric CT examinations performed in 2009. Large variations in dose, up to a factor of 4, were found among the centres within the same age group for a given procedure, and in one of the hospitals the paediatric dose was twice higher than the adult dose. Seven departments use dedicated CT protocols for children. Only 4 in 12 departments keep records of patient dose. Dose information for previous examinations is not required by the radiologists. The collected detailed data provided preliminary information how the patient doses in paediatric CT can be reduced. Recommendations were given based on the findings.
本研究的目的是探究保加利亚几家医院儿科计算机断层扫描（CT）检查的频率，并评估当前的做法。使用了国际原子能应急机构提供的用于儿科CT实践调查的标准表格。六家医院提供了2009年进行儿科CT检查频率的数据。在同一年龄组内，对于给定的检查程序，各中心之间的剂量存在高达4倍的巨大差异，并且在其中一家医院，儿科剂量比成人剂量高出两倍。七个科室使用专门的儿童CT检查方案。12个科室中只有4个记录患者剂量。放射科医生不需要之前检查的剂量信息。收集到的详细数据提供了关于如何降低儿科CT患者剂量的初步信息。根据研究结果给出了建议。
