下肢动脉狭窄性病变中三维增强磁共振血管成像和CT血管成像的对照分析  

Comparison of three-dimensional contrast enhanced magnetic resonance angiography and CT angiography in lower extremity arteriostenosis disease

作　　者：刘剑[1] 杨亚芳[1] 刘斐[1] 韩晖云[1] 顾生荣[1] 

机构地区：[1]南京医科大学第二附属医院,210011

出　　处：《实用医技杂志》2012年第8期803-805,共3页Journal of Practical Medical Techniques

摘　　要：目的评价三维增强磁共振血管成像(3D CE-MRA)和CT血管成像(CTA)技术在下肢动脉狭窄性病变的应用价值。方法对195例疑有下肢动脉狭窄患者,49例行3D CE-MRA检查,其中10例行数字减影血管造影(DSA)检查;149例行CTA检查,其中20例行DSA检查。将每条下肢动脉分9个节段,分别对2组病例以DSA为金标准进行效果评价,对比2种检查方法差异。结果①3D CE-MRA与DSA对比,准确率94.4%,敏感性100%,特异性100%,2种方法差异无统计学意义(χ2=0.262,P>0.05)。②CTA与DSA对比,准确率96.4%,敏感性100%,特异性100%,其中Ⅱ级以上狭窄准确率94.9%,敏感性100%,特异性97.6%,2种方法差异无统计学意义(χ2=0.194,P>0.05)。结论3D CE-MRA与CTA在下肢动脉狭窄性病变诊断中均具有较高价值,二者能准确评价下肢动脉狭窄性病变,是可靠、无创的检查方法。Objective To evaluate the clinical value of three-dimensional contrast enhanced magnetic resonance angiography （3D CE-MRA） and CT angiography （CTA） in arteriostenosis disease of lower extremity. Methods One hundred and ninety five patients suspected of having lower extremity arteriostenosis disease, among these patients：49 patients underwent 3D CE-MRA, 10 case carried out digital suhstraetion angiography （DSA）; 149 patients underwent CTA, 20 case carried out DSA. Every lower extremity was divided into 9 vascular segments, to contrast the difference between 2 groups using DSA as gold standard. Results （1） Comparing with DSA, the accuracy rate, sensibility and specificity of 3D CE-MRA were 94.4%, 100% and 100%. There was not significant difference between the 2 methods （×2= 0.262, P〉0.05）. （2） Comparing with DSA, the accuracy rate,sensibility and specificity of CTA were 96.4%, 100% and 100%. There was not significant difference between the 2 methods （×2=0.194, P〉0.05）. Conclusion Both 3D CE-MRA and CTA are good at evaluating the lower extremity arteriostenosis disease, they can evaluate lower extremity arterio- stenosis disease exactly. Both of these methods are reliable and non-invasive techniques.

关 键 词：磁共振成像 血管造影术 数字减影 下肢 

分 类 号：R543.5[医药卫生—心血管疾病]