Jończyk-Potoczna Katarzyna, Frankiewicz Marta, Warzywoda Małgorzata, Strzyżewski Krzysztof, Pawlak Bogdan
Department of Pediatric Radiology of the Chair of Radiology, Poznań University of Medical Sciences, Poznań, Poland.
Pol J Radiol. 2012 Jan;77(1):7-11. doi: 10.12659/pjr.882575.
A suspicion of ventriculo-peritoneal shunt failure is classified as the most common indication for CT in children with hydrocephalus. The main target of the study was to evaluate the diagnostic value of a low-dose protocol and to compare a total DLP received by patients in compared protocols.
MATERIAL/METHODS: Our retrospective analysis included 256 examinations performed in patients aged from 1 month to 18 years, with body mass ranging from 3 to 100 kg. The examinations were conducted in the years 2009-2011. A total number of 128 examinations were performed on the basis of the low-dose protocol and 128 according to a standard protocol using the Siemens SOMATOM Definition AS 128-slice scanner. RESULTS/CONLUSIONS: The analysis showed a full value of the diagnostic low-dose protocol with a simultaneous decrease of the total dose of DLP to the average of 40%. Application protocol with lower mAs in assessing the causes of ventriculo-peritoneal shunt failure in children with hydrocephalus is coherent with the valid principles of radiation protection in pediatrics and reduces the total DLP while maintaining a very good diagnostic value.
怀疑脑室-腹腔分流失败被列为脑积水患儿最常见的CT检查指征。本研究的主要目的是评估低剂量方案的诊断价值，并比较不同方案中患者接受的总剂量长度乘积（DLP）。
材料/方法：我们的回顾性分析纳入了256例年龄在1个月至18岁、体重在3至100千克的患者所进行的检查。这些检查于2009年至2011年期间进行。使用西门子SOMATOM Definition AS 128层扫描仪，基于低剂量方案进行了128例检查，按照标准方案进行了128例检查。
结果/结论：分析表明诊断性低剂量方案具有充分价值，同时DLP总剂量平均降低了40%。在评估脑积水患儿脑室-腹腔分流失败原因时，采用较低管电流时间积（mAs）的应用方案符合儿科有效的辐射防护原则，在保持良好诊断价值的同时降低了总DLP。
