医疗卫生装备2018，Vol.39Issue(1)：62-65,4.DOI:10.7687/j.issn1003-8868.2018.01.062
"双低"技术在320排CT肺动脉成像中的应用
Application of low-concentration contrast agent and low-dose technology in 320-slice CT pulmonary angiography
杜林芝 1强海霞 1钱玥 1韩月东 1成满平 1牛娟琴 1叶建军 1郝晓东 1杨晓萍 1陈纲 1杨菊红 1李欣怡1
作者信息
摘要
Abstract
Objective To explore the feasibility of low-concentration contrast agent and low-dose technology for pulmonary angiography by comparing the image quality and radiation doses to the patient by different tube voltages and concentrations of contrast agents.Methods Totally 60 patients suspected with pulmonary embolism were divided into C, L1 and L2 groups, of which,Group C had the scanning parameters of 120 kV and 350 mgI/ml,Group L1 had the parameters as 100 kV and 350 mgI/ml and Group L2 had the parameters of 100 kV and 270 mgI/ml.The three groups had the tube voltage as 500 mA, the contrast agent dose as 25 ml,physiological saline dose as 40 ml and flow rate as 4.5 ml/s.SPSS 19.0 software was used to compare and analyze the CT values of pulmonary artery segment,superior vena cava and ascending aorta,main pulmonary artery noises,the image quality as well as the radiation doses of volume scanning. Results The three groups had the main pulmonary aortas and their branches display clearly to meet clinical requirements.When compared with Group C,Group L1 had higher CT values of the main pulmonary aorta and its branches,higher image noise while lower radiation dose (P<0.01);Group L2 had equivalent CT values of the main pulmonary aorta and its branches (P>0.05),higher image noise while lower radiation dose (P<0.01).When compared with Group L1,Group L2 had lower CT values of the main pulmonary aorta and its branches (P<0.01),and equivalent image noise and radiation dose (P>0.05).Conclusion Low-concentration contrast agent and low-dose technology gains feasibility and advantages when used in 320-slice CT pulmonary angiography.关键词
肺动脉成像/320排CT/低浓度对比剂/低辐射剂量/影像质量Key words
pulmonary angiography/320-slice CT/low-concentration contrast agent/low radiation dose/image quality分类
医药卫生引用本文复制引用
杜林芝,强海霞,钱玥,韩月东,成满平,牛娟琴,叶建军,郝晓东,杨晓萍,陈纲,杨菊红,李欣怡.."双低"技术在320排CT肺动脉成像中的应用[J].医疗卫生装备,2018,39(1):62-65,4.
