探讨256层螺旋CT血管造影对主肾动脉及肾段动脉的显示  

Study on of main renal artery and renal artery segment with 256 slice spiral CT

作　　者：陈伟彬[1] 冯莉[2] 宫凤玲[1] 张惠英[1] 

机构地区：[1]河北联合大学附属医院CT室,河北唐山063000 [2]河北联合大学病理教研室,河北唐山063000

出　　处：《医学影像学杂志》2014年第5期782-785,共4页Journal of Medical Imaging

基　　金：唐山市科学技术研究与发展计划(项目编号:11150205A-1);河北省科技计划项目(项目编号:12277783)

摘　　要：目的探讨256层螺旋CT血管造影(DSCTA)对主肾动脉及肾段动脉的显示能力及图像质量评价。方法回顾性分析98例256层螺旋CT和94例64层螺旋CT检查的肾动脉MSCTA图像,以CT原始横断位图像为基础,结合VR、MIP等重建图像对各级肾动脉进行综合分析。结果 98例患者共显示肾动脉196条,主肾动脉及Ⅰ级、Ⅱ级皆显示清晰,显示率为100%,Ⅲ级分支显示率98.3%,Ⅳ级分支为90.2%,Ⅴ级分支为72.9%,Ⅵ级分支为30.9%。94例患者共显示肾动脉188条,其中主肾动脉及Ⅰ级皆显示清晰,显示率为100%,Ⅱ级分支显示率99.1%,Ⅲ级分支显示率90.3%,Ⅳ级分支为70.2%,Ⅴ级分支为4.8%,Ⅵ级分支为0%,两者比较具有统计学差异(P<0.05)。两组图像质量评分分别为(4.537±0.177)分和(3.965±0.189)分,两者比较具有统计学差异(P<0.05)。结论 256层螺旋CT血管造影显著提高了肾动脉图像质量,特别是对肾段动脉的显示,从而为临床诊断肾段动脉狭窄和了解肾肿瘤分支血供提供了重要的信息。Objective To investigate the display capacity and image quality evaluation of main renal artery and renal ar-tery with 256 slice spiral CT angiography （DSCTA） .Methods We retrospectively analysed the MSCTA images of renal artery of 98 patients with 256 slice spiral CT and 94 patients with 64 slice spiral CT .Basised on the original axial images , and combined with VR ,MIP image reconstruction ,a comprehensive analysis of the renal artery was performed .Results 196 renal arteryes were shown in 98 patients ,in which the main renal artery and grade Ⅰ ,Ⅱ were clearly displayed ,the displayed rate was 100% ,the displayed rate of grade Ⅲ branch was 98 .3% ,grade Ⅳ branch was 90 .2% ,grade Ⅴbranch was 72 .9% ,grade Ⅵ branch was 30 .9% .188 renal arteryes were shown in 94 patients ,in which the main renal artery and grade I were clearly displayed ,the displayed rate was 100% ,the displayed rate of grade Ⅱ branch displayed rate was 99 .1% ,grade Ⅲ branch was 90 .3% ,grade Ⅳ branch was 70 .2% ,grade Ⅴbranch was 4 .8% ,gradeⅥ branch was 0% .The image quality scores of the two groups were 4 .537 ± 0 .177 and 3 .965 ± 0 .189 ,and there was statistically significant difference betweenthen （ P〈0 .05） .Conclusion With the 256 slice spiral CT angiography ,the image quality of the renal artery significantly is improved ,especially in showing segmental renal artery ,which can provide important in-formation for clinical diagnosis of renal artery stenosis and understanding the branch blood of renal tumor .

关 键 词：肾动脉 血管造影术 图像处理 体层摄影 X线计算机 

分 类 号：R814.42[医药卫生—影像医学与核医学] R692[医药卫生—放射医学]