中国临床保健杂志Issue(4)：367-369,3.DOI:10.3969/J.issn.1672-6790.2015.04.012
能谱 CT 小剂量对比剂行肺动脉 CT 血管造影术的可行性研究
Feasibility of low dose contrast agent in computerized tomography pulmonary angiography with spectral CT imaging
曹东兴 1邓克学 1江帆 1姜莉1
作者信息
- 1. 安徽医科大学附属省立医院 安徽省立医院影像科，合肥 230001
- 折叠
摘要
Abstract
Objective To discuss the feasibility of test bolus (TB)by using low dose contrast agent with spectral CT imaging in CTPA.Methods 43 patients with suspected pulmonary embolism (PE)underwent CTPA were randomly divided into the study group(n =23)and the control group(n =20).The study group using spectrum scanning pattern with small dose of contrast agent injection test method.The control group used conventional dose of contrast medium intelligent dynamic tracing (smartprep)technology.The optimal CNR was used in experimental group.The CT values of main pulmonary artery (MPA),left pulmonary artery (LPA),and right pulmonary artery (RPA)were measured and compared in the two groups,respectively.The image quality was evaluated and compared with 5-point scale.Result The CT values of MPA in experimental group and control group were (387.923 ± 48.184)Hu,and(326.95 ±48.51)Hu ,respectively.The CT values of LPA in experimental group and control group were (390.19 ±57.91)Hu,and(341.04 ±34.95)Hu,respectively.The CT values of RPA in experimental group and control group were (398.02 ±55.35)Hu,and(312.15 ±40.16)Hu,respectively.The average scores of experimental group and control group were (4.61 ±0.66)and(3.90 ±1.02)respectively.The Differences were statistically signifi-cant(P =0.000,0.002,0.000,0.009 respectively).Conclusion Energy spectrum CT with small dose of contrast a-gent injection test pulmonary artery CTA may improve the image quality of CTPA and decrease the dose of contrast agent.关键词
血管造影术/肺动脉/可行性研究/体层摄影术,螺旋计算机Key words
Angiography/Pulmonary artery/Feasibility studies/Tomography,spiral computed分类
医药卫生引用本文复制引用
曹东兴,邓克学,江帆,姜莉..能谱 CT 小剂量对比剂行肺动脉 CT 血管造影术的可行性研究[J].中国临床保健杂志,2015,(4):367-369,3.
