低剂量对比剂在多排CT头颈部血管造影中的可行性分析  

Feasibility Analysis of Low-dose Contrast Agent in Multi-slice CT Head and Neck Angiography

作　　者：张鑫 陈小余[1] 杨娜 向世凤 ZHANG Xin;CHEN Xiao-yu;YANG Na;XIANG Shi-feng(Image Center,Chongqing Armed Police Corps Hospital,Chongqing 400061,China;Medical Examination Center,Chongqing Armed Police Corps Hospital,Chongqing 400061,China;Department of Radiology,Chongqing General Hospital,University of Chinese Academy ofSciences,Chongqing 40014,China)

机构地区：[1]武警重庆市总队医院影像中心,重庆400061 [2]武警重庆市总队医院体检中心,重庆400061 [3]中国科学院大学重庆医院(重庆市人民医院)放射科,重庆400014

出　　处：《中国CT和MRI杂志》2021年第8期38-41,共4页Chinese Journal of CT and MRI

摘　　要：目的研究低剂量对比剂在多排螺旋CT头颈部血管造影中的可行性分析。方法选取2012年1月至2018年12月我院180例进行头颈部血管造影的患者,其中检查采用低剂量对比剂的患者92例(对比剂50ml,低剂量组),正常对比剂量88例(对比剂70ml,正常组),采用多排螺旋CT头颈部血管造影后比较两组头颈部血管CT值、头颈部血管成像对比剂显影CT值、对比剂静脉残留显影CT值以及图像质量。结果低剂量组双侧CCA起始部、SA、V2、CCA环、ECA起始部、ICA起始部及虹吸部、单侧左A2TC值低于正常组,组间差异具有统计学意义(P<0.05);低剂量组对比剂显影后主动脉弓、颈总动脉、颈动脉分叉及大脑中断动脉M1段的CT值明显低于正常组,差异具有统计学意义(P<0.05);低剂量组对比剂静脉残留显影中上腔静脉、颈内静脉及头臂静脉以及锁骨下静脉均低于正常组;低剂量组对比剂图像重量优、差显著优于正常组,组间差异统计学意义(P<0.05)。结论多排螺旋CT头颈部血管造影采用低剂量对比剂是可行的。Objective To study the feasibility of low-dose contrast agent in multi-slice spiral CT head and neck angiography.Methods A total of 180 patients with head and neck angiography in our hospital from January 2012 to December 2018 were enrolled,including 92 patients with low-dose contrast agents(contrast agent 50 ml,low-dose group)and 88 patients with normal contrast agents(contrast agent 70ml,normal group).The multi-slice spiral CT head and neck angiography was used to compare the CT values of head and neck blood vessels,CT values of head and neck angiography contrast agent enhancement,CT values of contrast agent venous residual development and image quality were compared in the two groups.Results In the low-dose group,the bilateral CCA initiation,SA,V2,CCA ring,ECA start,ICA start,and siphon,and unilateral left A2TC values were lower than the normal group(P<0.05).The CT values of the aortic arch,common carotid artery,carotid bifurcation,and middle cerebral artery M1 segment in the low-dose group were significantly lower than those in the normal group(P<0.05).In the low-dose group,the superior vena cava,the internal jugular vein,the brachiocephalic vein,and the subclavian vein in contrast agent venous residual development were lower than the normal group.The image quality of the contrast agent in the low dose group was significantly better than the normal group(P<0.05).Conclusion Multi-slice spiral CT head and neck angiography with low-dose contrast agent is feasible.

关 键 词：头颈部 血管造影术 造影剂 多排螺旋CT 

分 类 号：R323.1[医药卫生—人体解剖和组织胚胎学] R445.3[医药卫生—基础医学]