从RSNA2012看CT 低剂量技术的发展

摘要

本文回顾了刚刚结束的第98 届北美放射学会年会(RSNA2012)上关于CT 低剂量研究和临床的新进展.这些新技术包括各种迭代重建软件,更新型探测器等的推出,大幅度降低患者的辐射剂量,拓宽了CT 的临床应用,如全器官CT 灌注成像,大范围多期扫描等.合理使用低剂量ALARA 原则(As Low As Reasonably Achievable)同样适用于CT 检查.%This paper reviews the just-concluded 98th Annual Meeting of the Radiological Society of North America (RSNA2012) on CT low-dose studies and new clinical progress. These new technologies, including various iterative reconstruction software and updated type detectors, significantly reduce radiation dose patient received and broaden the clinical application of CT, such as whole-organ CT perfusion imaging, a wide range of multi-phase scan and so on. Rational use of low-dose ALARA principle (As Low As Reasonably Achievable) also applies to the CT examination.