University of British Columbia, Providence Heart & Lung Institute/St Paul's Hospital, Vancouver, Canada.
Can J Cardiol. 2010 Jan;26(1):35-6. doi: 10.1016/s0828-282x(10)70333-0.
Coronary computed tomography angiography (CCTA) is becoming an increasingly robust tool in the assessment and exclusion of coronary artery disease. Multiple recent studies have raised concerns regarding the radiation dose exposure of CCTA. A novel approach to dose reduction in CCTA using adaptive statistical iterative reconstruction, resulting in a submillisievert CCTA examination, is described. To the authors' knowledge, the present report describes the first submillisievert study performed in Canada. The ability to perform a diagnostic CCTA with such a low dose challenges the role of coronary calcium scoring and will likely have implications for the future use of this test.
冠状动脉计算机断层扫描血管造影（CCTA）在评估和排除冠状动脉疾病方面正成为一种越来越强大的工具。多项近期研究对 CCTA 的辐射剂量暴露提出了担忧。本文介绍了一种使用自适应统计迭代重建降低 CCTA 剂量的新方法，可实现亚毫西弗级 CCTA 检查。据作者所知，本报告描述了在加拿大进行的首次亚毫西弗级研究。能够以如此低的剂量进行诊断性 CCTA 检查对冠状动脉钙化评分的作用提出了挑战，并且可能对该测试的未来使用产生影响。
