16层螺旋CT冠脉造影应用初探  

The application of coronary angiography with 16-detector row spiral CT

作　　者：王小平[1] 魏文萍[1] 汪敬群[1] 杨建和[1] 沈明华[1] 

机构地区：[1]福建医科大学附属厦门市第一医院放射科CT室,525000

出　　处：《影像诊断与介入放射学》2004年第4期251-253,共3页Diagnostic Imaging & Interventional Radiology

摘　　要：目的探索16层螺旋CT冠状动脉造影在不同心率下不同方法的显示能力。方法40例行16层螺旋CT冠状动脉造影后,用Half和Segement两种重建,VitrealⅡ图形工作站的VitrealⅡ软件,应用表面遮蔽显示(SSD)、容积显示(VR)、多平面重建(MPR)、曲面重建(CVR)等多种方法重建后处理。结果心率小于70次/min,进行Half和Segement两种方法重,冠脉各支均显示清晰,以R-R间期70%～80%的Half更满意。同样心率70-90次/min,冠脉各支显示均优,以R-R间期的50%～60%的Segement重建更优。心率大于90次/min,Segement重建以R-R间期的50%～60%的Segement重建更优,冠脉各支可显示,右冠较左冠脉显示差,Half重建见锯齿状伪影。结论不同心率采用不同的重建方法、适当选择扫描参数及应用高浓度对比剂16层螺旋CT冠脉造影可获得满意的冠状动脉主干及分支的图像,作为一种冠心病筛选、随访的无创检查方法,具有广阔的前景。Objective To explore the coronary artery showing capacity of coronary angiography by 16-detector row spiral CT with various methods under different heart rates. Methods Forty subjects underwent coronary angiography by 16-detector row CT. Firsthand data were gethered by TOSHIBA Aqulition 16-detector row spiral CT and were reconstructed with Half and Segement methods through vitrea II imaging workstation. Reconstructions were carried out with multi-position, multi-angle、2D and 3D by SSD, VR, MPR, CVR, VE and blood vessel analysis.Results All branches of coronary artery were showed clearly by tboth Half and Segement methods when heart rates were lower than 70bpm. 70%-80%of R-R interval with Half method was more satisfactory. All branches of coronary artery showed clearly when heart rateswere between 70 and 90bpm. 50%-60%of R-R interval by segement method was better. All branches can be showed when heart rates were higher than 90bpm. 50%-60%of R-R interval by segement method was more satifactory. Rightcoronary artery was showed wores than left. Coronary artery showed unclearly by Half method. Conclusion under various heart rates,images of coronary artery trunks and branches can be gained satisfactorily with coronary angiography by 16-detector row spiral CT with different reconstruction methods. Scan refferences and high cocentration contrast medium. It is a unwounding and unreplaceable examination method for sieving, return visit of coronary heart disease. It has a broad prospect.

关 键 词：16层螺旋CT 冠脉造影 心率 冠状动脉造影 多平面重建 CVR 对比剂 显示 无创检查 伪影 

分 类 号：R816.2[医药卫生—放射医学]