CTA/MRA的诊断准确率与肾动脉开口狭窄程度的关系  

Accuracy of computed tomographic angiography and magnetic resonance angiography for diagnosing renal artery ostium stenosis and its relationship to the degree of stenosis

作　　者：李美花[1] 朱宁[1] 张冬梅[1] 安宁豫[1] 宁兆琪[1] 

机构地区：[1]解放军总医院,北京100853

出　　处：《中国老年学杂志》2008年第10期975-977,共3页Chinese Journal of Gerontology

基　　金：卫生部保健局保健科研资金资助(课题编号081)

摘　　要：目的探讨螺旋CT血管造影（CTA）/核磁共振肾动脉成像（MRA）对粥样硬化性肾动脉开口狭窄的诊断准确率与狭窄程度的关系。方法收集粥样硬化性肾动脉开口狭窄的病例资料,以肾动脉造影为诊断金标准,分别对比分析CTA或MRA的诊断结果。结果①CTA并肾动脉造影确诊的患者63例,男42例,女21例,年龄（56.7±16.2）岁;MRA并肾动脉造影确诊的患者48例,男42例,女6例,年龄（72.1±8.3）岁。②CTA、MRA诊断肾动脉开口狭窄病变的准确率分别达到97%或93.3%,二者比较无统计学差异（P〉0.05）;③CTA/MRA诊断肾动脉开口狭窄的准确率与狭窄程度相关：狭窄程度明显的病变,无论CTA或MRA的诊断准确率均达100%,狭窄程度约50%-60%时两者的诊断准确率均显著降低（P〈0.05）。结论CTA/MRA诊断肾动脉开口狭窄的总准确度可与肾动脉造影媲美,对于狭窄程度约50%-60%的病变则两者的诊断准确率均较低。CTA与MRA在诊断准确率和诊断局限性上相当。Objective To understand the clinical values of computed tomographic angiography （CTA） and magnetic resonance angiography （MRA） in diagnosing atherosclerotic renal artery ostium stenosis, diagnostic accracy of CTA/MRA were evaluated according to different degree of stenosis. Methods Data of atherosclerotic renal artery ostium stenosis were collected. Diagnosis by renal artery angiography （PRA） was treated as gold standard, diagnosis by CTA or MRA were collected and analysed. Results （1） 63 cases diagnosed by CTA and proved by PRA, 42 males, 21 females, aged （56. 7± 16. 2） years old;48 cases diagnosed by MRA and proved by PRA, 42 males, 6 females, aged （72. 1 ±8.3） years old. （2） Total diagnostic accuracy of CTA or MRA in diagnosing atherosclerotic renal artery ostium stenosis were 97% or 93.3% respectively, without statistical significance （P 〉0. 05 ） ;（3） Accuracy of CTA or MRA were related to the degree of stenosis： for significant ostium stenosis the diagnostic accuracy were 100% respectively, for stenosis between 50% - 60% , the diagnostic accuracy by both CTA or MRA were low （ P 〈 0. 05 ）. Conclusions Accuracy of CTA or MRA are comparable to that of PRA in general, while in mild range stenosis the accuracy by CTA or MRA are low. Both CTA and MRA are similar in accuracy or clinical limitations.

关 键 词：肾动脉梗阻 粥样硬化 螺旋CT血管造影 核磁共振肾动脉成像 

分 类 号：R692.5[医药卫生—泌尿科学]