双低扫描在冠状动脉CT血管成像的研究进展

Research Progress of Double-Low Scan in Coronary CT Angiography

冠状动脉CT成像(Coronary CT Angiography,CCTA)已成为评估冠状动脉疾病的重要非侵入性诊断方法,随着CCTA在临床的广泛应用,其高辐射致癌风险和碘对比剂不良反应等问题愈加受到重视。双低扫描(低辐射剂量、低对比剂用量)是目前CT血管成像的研究热点,其可以在保证诊断效能前提下降低辐射剂量和对比剂用量,特别是随着计算机技术的飞速发展,迭代重建算法为双低扫描提供了更加强大的动力,其应用前景更加广泛。本文简述CCTA的发展史和临床应用,对双低扫描在CCTA中的应用及研究进展进行综述,以期为冠状动脉疾病的临床诊断提供参考。

Coronary CT angiography(CCTA)has become an important non-invasive method for the evaluation of coronary artery disease.With the wide application of CCTA in clinical practice,its high radiation carcinogenic risk and adverse reactions of contrast medium have attracted more and more attention.Double-low scanning(low radiation dose and low contrast medium dosage)is a research hotspot of CT angiography at present,which reduces radiation dose and iodine contrast medium dosage on the premise of ensuring diagnostic efficiency.Especially with the rapid development of computer technology,iterative reconstruction algorithm provides more powerful power for double-low scanning,and its application prospect is more extensive.This paper reviewed the history and clinical application of CCTA,and the application and research progress of double-low scanning in CCTA,in order to provide reference for the clinical diagnosis of coronary artery disease in the future.