| 64层螺旋CT冠状动脉低剂量成像初探 |
| |
| 引用本文： | 程英,关计添,金阳,郭岳霖,张远芳.64层螺旋CT冠状动脉低剂量成像初探[J].CT理论与应用研究,2009,18(3). |
| |
| 作者姓名： | 程英 关计添 金阳 郭岳霖 张远芳 |
| |
| 作者单位： | 汕头大学,医学院第二附属医院放射科,广东,汕头,515041 |
| |
| 摘 要： | 目的:优化扫描模式,降低冠状动脉成像辐射剂量.方法:60名患者随机分为两组,每组30人.钙化积分分别应用430 mA和80 mA管电流扫描;延迟时间测定使用团注测定和智能跟踪:冠状动脉成像包括心电门控非管电流调节和管电流调节模式,分别计算所有组平均ED和图像SNR.结果:钙化积分平均ED从2.35±0.42降至0.42±0.03;延迟时间平均功从1.39±0.14降至0.13±0.04;两组冠状动脉成像平均ED从28.22±4.90降至21.14±1.54.两组钙化积分平均SNR组间比较有显著性差异,而两组冠状动脉成像模式平均SNR组间比较无显著性差异.结论:应用80 mA扫描钙化积分、智能跟踪测试延迟时间和心电门控调节管电流模式进行冠状动脉成像,可显著降低辐射剂量并获得诊断需要的图像.
|
| 关 键 词： | 64层螺旋CT 冠状动脉成像 低辐射剂量 |
64-MSCT Coronary Angiography with Reduction Radiation Dose |
| |
| CHENG Ying,GUAN Ji-tian,JING Yang,GUO Yue-lin,ZHANG Yuan-fang.64-MSCT Coronary Angiography with Reduction Radiation Dose[J].Computerized Tomography Theory and Applications,2009,18(3). |
| |
| Authors: | CHENG Ying GUAN Ji-tian JING Yang GUO Yue-lin ZHANG Yuan-fang |
| |
| Institution: | CHENG Ying,GUAN Ji-tian,JING Yang,GUO Yue-lin,ZHANG Yuan-fang Department of Radiology,the Second Affiliated Hospital,Medical College of Shantou University,Shantou 515041,China |
| |
| Abstract: | Objective:To optimize the scan protocol,and reduce the radiation dose in coronary angiography with 64-MSCT.Methods:60 patients were randomly divided into two groups,30 included in each group.Calcium score images were scanned by tube current of 430 mA and 80 mA;delayed time was detected by timing bolus and Smart Prep,respectively;Coronary angiography was performed using ECG-gated protocol without tube current modulation and that with tube current modulation.In all groups,the mean effective dose and signal no... |
| |
| Keywords: | 64 slice computed tomography coronary angiography low radiation dose |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
