猪颈动脉MSCTA与DSA的对照研究  

Comparative Study of MSCTA and DSA of Pig Carotid Artery

作　　者：周建军[1] 周康荣[1] 陈祖望[1] 吴安乐[1] 张国富[1] 张利军[1] 

机构地区：[1]复旦大学附属中山医院,上海市医学影像研究所,上海200032

出　　处：《放射学实践》2005年第5期438-441,共4页Radiologic Practice

基　　金：卫生部博士点基金资助项目(9741)

摘　　要：目的比较猪全程颈动脉MSCT血管成像与DSA成像的检查方法和图像质量,评价MSCT在颈动脉检查中的应用前景。方法选用中科院实验动物猪10头,分别作颈动脉MSCTA和DSA后,人工建立颈动脉血管腔内和腔外血管狭窄模型,再做MSCTA和DSA检查。MSCTA扫描层厚选用1.3mm层厚组,后处理采用最大密度投影技术和容积显示两种成像方法。从两种检查方法的风险性、对诊断方面可能带来的影响进行分析,并根据显示血管的整体性、颈动脉血管的边缘情况、颈动脉的密度和分支级别显示情况进行综合比较,由两位有经验的放射科医生用盲法评价。结果在颈动脉起始段的显示、血管整体性、任意角度观察以及受血流影响等方面,MSCTA优于DSA;在血管边缘以及分支血管光滑度等方面,MSCTA不如DSA。结论MSCTA血管密度均匀,可以多角度观察和分析血管;辅助以横断面图像,对血管壁及血管腔外病变有意义。Objective:To evaluate the value of MSCTA of carotid artery by comparing the image quality of multislice spiral CT angiography (MSCTA) of pig carotid artery with that of DSA.Methods:10 pigs underwent the exam of 1.3mm collimation scans of MSCT and digital subtraction angiography,the acquired volume data of MSCTA were postprocessed with three dimentional reformation of Maximum Intensity Projection (MIP) and Volume Rendering (VR).The risk and the value of two exams were evaluated;General evaluation based on the entirety, the outline and branches of carotid artery.And statistical analysis with SPSS was conducted by two experienced radiologists.Results:The advantage of MSCTA of carotid artery over DSA was in such aspects as image entirety,observation from any angle with little effects by blood flow,little risk and lower price.But the general image quality of carotid artery MSCTA was affected by the means of three dimensional reformation.The outline and smothness of the branches of carotid artery on DSA were superior to that on MSCTA.Conclusion:The difference between two exams was obvious,MSCTA has the advantage of homogeneous density and multidirectional observation of the vessel;in combination with axial view,it is beneficial for evaluation of lesions of vascular wall and extraluminal lesions.

关 键 词：颈动脉 体层摄影术 X线计算机 数字减影血管造影 

分 类 号：R816.1[医药卫生—放射医学]