脉冲式心电门控与Force CT 70 kV前瞻性大螺距技术在冠状动脉成像中的对比研究  

A comparative study of pulsed electrocardiographic gating and Force CT 70 kV prospective large-pitch technique in coronary artery imaging

作　　者：王云玲 罗琳[1] 穆紫薇 罗成茂 原小军[1] WANG Yunling;LUO Lin;MU Ziwei;LUO Chengmao;YUAN Xiaojun(Department of Imaging,The First Affiliated Hospital of Baotou Medical College,Inner Mongolia University of Science and Technology,Baotou,Inner Mongolia 014010,China)

机构地区：[1]内蒙古科技大学包头医学院第一附属医院影像科,内蒙古包头014010

出　　处：《影像研究与医学应用》2024年第19期7-10,共4页Journal of Imaging Research and Medical Applications

基　　金：包头医学院科学研究基金(BYJJ-QWB202231)。

摘　　要：目的:探讨脉冲式心电门控与Force CT 70 kV前瞻性大螺距冠状动脉成像对辐射剂量和图像质量的影响。方法:搜集2022年1月—2023年1月在内蒙古科技大学包头医学院第一附属医院就诊的49例行256层iCT 100 kV脉冲式心电门控冠状动脉CT血管成像(CCTA)的患者和37例行Force CT 70 kV前瞻性大螺距CCTA的患者资料,分别记为A组和B组,共86例。比较两组患者的心率、各段冠状动脉CT值、信噪比、对比噪声比及辐射剂量。结果:两组患者的心率、各段冠状动脉CT值、信噪比、对比噪声比及辐射剂量的差异有统计学意义(P<0.05)。结论:Force CT 70 kV前瞻性大螺距冠状动脉成像比脉冲式心电门控100 kV管电压下冠脉成像对心率的要求减低,70 kV管电压条件下可以降低辐射剂量,而图像质量仍可满足诊断要求。Objective To investigate the effects of pulsed electrocardiography(ECG)gated and Force CT 70 kV prospective large-pitch coronary artery imaging on radiation dose and image quality.Methods Data of 49 patients who underwent 256-slice iCT 100 kV pulsed ECG-gated coronary CT angiography(CCTA)and 37 patients who underwent Force CT 70 kV prospective high-pitch CCTA were collected in the First Affiliated Hospital of Baotou Medical College from January 2022 to January 2023,Inner Mongolia University of Science and Technology.They were recorded as group A and group B,with a total of 86 cases.The heart rate,CT value of each segment of coronary artery,signal-to-noise ratio,contrast-to-noise ratio and radiation dose of the two groups were compared.Results There were significant differences in heart rate,CT value of coronary artery,signal-to-noise ratio,contrast-to-noise ratio and radiation dose between the two groups(P<0.05).Conclusion Force CT 70 kV prospective large-pitch coronary artery imaging has lower requirements on heart rate than pulse ECG gated coronary artery imaging under 100 kV tube voltage,and the radiation dose can be significantly reduced under 70 kV tube voltage,while the image quality can still meet the diagnostic requirements.

关 键 词：双源CT 冠状血管造影术 自适应前瞻性心电门控 辐射剂量 

分 类 号：R445.3[医药卫生—影像医学与核医学]