摘要
目的:探讨多层螺旋CT直接法下肢静脉造影检查时,不同浓度对比剂对图像质量的影响。方法:收集2014年至2016年经直接法下肢静脉检查的患者,对比剂注射速率为3m L/s,延时时间50s,扫描时间20s,按照不同浓度进行分组,获取原始图像数据,并经后处理进行图像重建分析,对所获图像进行评估并进行统计学分析。结果:本组患者共40例,80侧下肢深静脉,其中各组的评分结果如下,其中浓度1:4(对比剂碘帕醇370mg I/m L与生理盐水的稀释比例)组中,1分的为13.04%,2分的为52.17%,3分的为34.79%;浓度1:6组中,1分的为11.11%,2分的为22.22%,3分的为66.67%,其中浓度1:7组中,1分的为18.18%,2分的为18.18%,3分的为63.64%;其中浓度1:9组中,1分的为0,2分的为24%,3分的为76%;结论:本研究表明应用对比剂浓度1:6、1:7、1:9的对比剂,均可获得清晰的血管影像,但对比剂浓度设置1:9时不仅可为临床提供最佳的影像资料,而且减少了对比剂用量,可被认为是下肢静脉CTV的最佳浓度。
Objective:To investigate the effect of different concentration contrast agents on the image quality of the lower extremity venography with multi-slice spiral CT.Methods:The patients received direct method lower extremity venous examination were collected from 2014 to 2016 in our hospital.The injection rate of contrast medium was 3ml/s,the delay time was 50s and the scanning time was 20s.The images were divided into groups according to the different concentrations,and the original image data were acquired.The original image data were acquired and analyzed by image reconstruction.The images were evaluated and analyzed statistically.Results:In this group of 40 patients,80 sides of the lower extremity deep vein,the scores of each group were as follows:the concentration of 1:4 group,1 points for 13.04%,2 points for 52.17%,3 points for 34.79%;concentration of 1:6 group,1 points for the 11.11%,2 points for 22.22%,3 points for the 66.67%;the concentration of 1:7 group,1 point for 18.18%,2 points for 18.18%,3 points for 63.64%;the concentration of 1:9 group,1 points for the 0,2 points for 24%,3 points for 76%cases.Conclusion:This study demonstrates the use of contrast media at a contrast agent concentration of 1:6,1:7,1:9 can get a clear image of blood vessels.But the concentration of contrast agent set 1:9 not only can provide the best clinical image data,but also reduce the amount of contrast agent,can be considered the best venous CTV of the lower extremity concentration.
作者
王宁
李高阳
张丹
邢媛媛
李潇
米楠
WANG Ning;LI GaoYang;ZHANG Dan;XING Nuannuan;LI Xiao;MI Nan(The Affiliated Hospital of ChengDe Medical College,Hebei Chengde 067000,China)
出处
《河北医学》
CAS
2018年第3期482-485,共4页
Hebei Medicine
关键词
下肢深静脉
计算机断层成像
对比剂浓度
Deep vein of lower limb
Computed tomography
Contrast agent concentration
作者简介
【通讯作者】张丹
