摘要
目的探究血液循环速度与冠状动脉CT血管造影(CTA)增强效果的相关性,并分析对比剂优化方案。方法选取2020年1月~2021年4月于我院行冠状动脉CT血管造影患者161例,按照血液循环速度分为快速组(n=32)、中等组(n=35)和缓慢组(n=94),分析血液循环速度与增强效果关系,并将缓慢组分为A、B、C 3个亚组,A组与快速组、中等组使用的对比剂浓度和注射速率相同(均为碘浓度320 mgI/mL,速率5 mL/s);B组采用对比剂的碘浓度为350 mgI/mL,速率5.5 mL/s;C组采用对比剂的碘浓度为370 mgI/mL,速率5.5 mL/s,比较各组伪影发生、室间隔显示、冠脉CT值及图像质量情况。结果快速组、中等组、B组、C组产生伪影概率均低于A组,且快速组低于中等组,C组低于B组(P<0.05);快速组、中等组、B组、C组主动脉根部CT值、图像质量评分、室间隔显示评分均高于A组,且快速组高于中等组,C组高于B组(P<0.05)。结论血液循环速度能增加冠脉CTA增强效果,清晰显示室间隔,对于血液循环较慢者可适当增加对比剂浓度和注射速率以保证图像质量。
Objective To explore the correlation between blood circulation velocity and the enhancement effect of coronary CT angiography(CTA),and to analyze the optimization scheme of contrast medium.Methods A total of 161 patients who underwent coronary CT angiography in our hospital from January 2020 to April 2021 were selected and divided into fast group(n=32),medium group(n=35)and slow group(n=94)according to blood circulation velocity.The relationship between blood circulation speed and enhancement effect was analyzed.The slow group was divided into three subgroups:group A,group B and group C.The contrast agent concentration and injection rate of group A,fast group and medium group were the same(iodine concentration was 320 mgI/mL and injection rate was 5 mL/s).The iodine concentration of group B was 350 mgI/mL and injection rate was 5.5 mL/s,while the iodine concentration of group C was 370 mgI/mL and injection rate was 5.5 mL/s.The occurrence of artifacts,ventricular septal display,coronary CT value and image quality were compared.Results The artifact probability of fast group,medium group,B group and C group was lower than that of a group,and fast group was lower than that of medium group,and C group was lower than that of B group(P<0.05).The CT value of aortic root,image quality score and ventricular septal display score of fast group,medium group,B group and C group were higher than those of A group,and the fast group was higher than that of medium group,and the C group was higher than that of B group(P<0.05).Conclusion The velocity of blood circulation can increase the enhancement effect of coronary CTA and clearly show the interventricular septum.For the patients with slow blood circulation,the contrast medium concentration and injection rate can be increased appropriately to ensure the image quality.
作者
谢友扬
张艳
石威
王雪峰
顾华伟
王为苗
曹阳
储伟
XIE Youyang;ZHANG Yan;SHI Wei;WANG Xuefeng;GU Huawei;WANG Weimiao;CAO Yang;CHU Wei(Department of Medical Imaging,People's Hospital of Huishan District,Wuxi 214187,China;Department of Radiology,Qinhuai Medical District,Eastern Theater General Hospital,Nanjing 320104,China)
出处
《分子影像学杂志》
2021年第5期776-781,共6页
Journal of Molecular Imaging
基金
江苏大学临床医学科技发展基金研究项目(JLY2021129)
上海市分子影像学重点实验室2019年度开放课题重点项目(Z201901)。
关键词
血液循环速度
冠状动脉CT血管造影
对比剂
冠心病
blood circulation speed
CT angiography of coronary artery
contrast agent
coronary heart disease
