左、右肘静脉注射对比剂行颈动脉CT血管成像的成功率及质量差异

Differences of Success Rate and Quality of CT Angiography of Carotid Artery by Intravenous Injection of Contrast Agent into Left and Right Elbow

目的:探讨通过左、右肘注射造影剂是否会影响颈部多层螺旋计算机断层扫描(CT)血管造影的静脉伪影。方法:选取2016年5月至2018年8月在我院接受头颈双源螺旋CT血管造影的221例患者作为研究对象,其中124名患者接受左臂注射造影剂,97名患者接受右臂注射造影剂。图像质量的比较分析包括确定保留在上腔静脉、头臂静脉或锁骨下静脉中的造影剂残留物,以及三维CT血管造影质量的比较。结果:左臂延迟时间>23 s和右臂延迟时间>18 s时的图像质量为优的比例超过60%,两组优良率分布差异有统计学意义(P=0.003)。结论:在颈动脉CT血管造影时,使用右臂静脉注射造影剂,可显著减少上腔静脉、头臂静脉、锁骨下静脉伪影。

Objective:To evaluate the venous artifacts of carotid computed tomographic(CT)angiography of patients injected with contrast material in their right arms versus patients injected with contrast material in their left arms.Methods:From May 2016 to August 2018,221 patients had undergone head and neck dual-source spiral CT angiography in our hospital were selected as the study subjects,including 124 patients who received left arm injection of contrast agent,and 97 patients who received right arm injection of contrast agent.Comparative analyses of image quality included determining contrast medium residues remaining in the superior vena cava,brachiocephalic vein,or subclavian vein,and comparisons of quality of three-dimensional CT angiography.Results:When the left arm delay time>23 seconds and the right arm delay time>18 seconds,the excellent rate was more than 60%.There was a significant difference in the distribution of the excellent rate between the two groups(P=0.003).Conclusion:The use of the right upper arm for intravenous injection of contrast medium significantly reduces artifacts in the superior vena cava,brachiocephalic vein and subclavian vein during head and neck CT angiography.