脉冲式心电门控与Force CT 70kV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
王云玲 1罗琳 1穆紫薇 1罗成茂 1原小军1
作者信息
- 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
- 折叠
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.
Abstract
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Key words
Dual-source CT/Coronary angiography/Adaptive prospective electrocardiogating/Radiation dose引用本文复制引用
基金项目
包头医学院科学研究基金(BYJJ-QWB202231)
出版年
2024
NETL
NSTL
万方数据