CT血管造影应用双流速低剂量对比剂对冠脉各节段图像质量的影响  

Effects of dual flow rate and low dose of contrast agent on images quality of coronary segments in CT angiography

作　　者：宋兰兰 Song Lanlan(CT Unit,Anqing Municipal Hospital,Anqing 246000,Anhui,China)

机构地区：[1]安庆市立医院影像科CT室,安徽安庆246000

出　　处：《西藏医药》2024年第4期26-28,共3页Tibetan Medicine

摘　　要：目的目的探究CT血管造影应用双流速低剂量对比剂对冠脉各节段图像质量的影响。方法方法选取2021年2月~2022年3月在本院进行CT造影检查的患者108例,根据入院时间将纳入研究对象分为两组,观察组54例,对照组54例。对照组使用常规对比剂进行检查,观察组使用双流速低剂量对比剂,比较两组图像质量评分及冠状动脉各部分CT值。结果图像质量评分:对照组(2.91±0.63)分,观察组(3.18±0.61)分,差异有意义(P=0.026);观察组和对照组患者主动脉根部、右冠状动脉起始部、回旋支中段及前降支远端CT值比较,差异无意义(P>0.05);观察组左冠状动脉起始部及右冠状动脉远端CT值较低与对照组,差异有意义(P<0.05)。结论CT血管造影应用双流速低剂量对比剂能提高冠脉各节段图像质量,对冠状动脉各部位CT值无较大影响,满足临床诊断要求。Objective To explore the effects of dual flow rate and low dose of contrast agent on images quality of coronary seg-ments in CT angiography.Methods A total of 108 patients undergoing CT angiography in the hospital were enrolled between Febru-ary 2021 and March 2022.According to admission time,they were divided into observation group(54 cases,dual flow rate and low dose of contrast agent)and control group(54 cases,routine contrast agent).The scores of images quality and CT values of coronary segments were compared between the two groups.Results The score of images quality in observation group was higher than that in control group[(3.18±0.61)points vs(2.91±0.63)points;t=2.262,P=0.026].There was no significant difference in CT values of aor-tic root,initial part of right coronary artery,middle part of circumflex branch and distal end of anterior descending branch between the two groups(P>0.05).CT values in initial part of left coronary artery and distal end of right coronary artery in observation group were lower than those in control group(P<0.05).Conclusion The application of dual flow rate and low dose of contrast agent in CT angiography can improve images quality of coronary segments and has no significant effect on CT values in different parts of coro-nary artery,which can meet clinical diagnosis requirements.

关 键 词：CT血管造影 双流速 低剂量 对比剂 冠脉 

分 类 号：R541.4[医药卫生—心血管疾病] R816.2[医药卫生—内科学]