Zarb Francis, McEntee Mark, Rainford Louise
Department of Radiography, Faculty of Health Sciences, University of Malta, Msida, Malta.
Radiat Prot Dosimetry. 2012 Jun;150(2):198-206. doi: 10.1093/rpd/ncr393. Epub 2011 Oct 12.
This work recommends dose reference levels (DRLs) for abdomen, chest and head computerised tomography (CT) examinations in Malta as the first step towards national CT dose optimisation. Third quartiles volume CT dose index values for abdomen: 12.1 mGy, chest: 13.1 mGy and head: 41 mGy and third quartile dose-length product values for abdomen: 539.4, chest: 492 and head: 736 mGy cm(-1) are recommended as Maltese DRLs derived from this first Maltese CT dose survey. These values compare well with DRLs of other European countries indicating that CT scanning in Malta is consistent with standards of good practice. Further work to minimise dose without affecting image quality and extending the establishment of DRLs for other CT examinations is recommended.
这项工作推荐了马耳他腹部、胸部和头部计算机断层扫描(CT)检查的剂量参考水平(DRLs),作为该国CT剂量优化的第一步。从马耳他首次CT剂量调查得出的马耳他DRLs推荐值为:腹部容积CT剂量指数第三四分位数12.1毫西弗、胸部13.1毫西弗、头部41毫西弗;腹部剂量长度乘积第三四分位数539.4、胸部492、头部736毫西弗·厘米(-1)。这些值与其他欧洲国家的DRLs相比情况良好,表明马耳他的CT扫描符合良好操作规范标准。建议开展进一步工作,在不影响图像质量的情况下尽量降低剂量,并为其他CT检查扩展DRLs的制定。