【摘要】：目的評(píng)估3.0T非增強(qiáng)磁共振血管成像(NCE-MRA)診斷下肢動(dòng)脈狹窄的價(jià)值,為臨床提供可靠的檢查方法。資料與方法 30例擬診為下肢動(dòng)脈病變的患者行NCE-MRA檢查后接受增強(qiáng)磁共振血管成像(CE-MRA)檢查,評(píng)價(jià)兩種檢查方法的圖像質(zhì)量,并以CE-MRA為標(biāo)準(zhǔn),評(píng)估NCE-MRA診斷動(dòng)脈顯著性狹窄(≥50%)的準(zhǔn)確度,分析兩者診斷動(dòng)脈顯著性狹窄(≥50%)的一致性。結(jié)果 30例患者成功完成NCE-MRA和CE-MRA檢查,NCE-MRA具有診斷價(jià)值的動(dòng)脈節(jié)段有532個(gè)。小腿段NCE-MRA圖像靜脈污染較CE-MRA少(Z=4.92,P0.01),腹盆部、大腿段NCE-MRA圖像靜脈污染較CE-MRA多(Z=4.58、3.56,P0.01)。NCEMRA診斷下肢動(dòng)脈顯著性狹窄(≥50%)的敏感度、特異度、準(zhǔn)確度、陽(yáng)性預(yù)測(cè)值、陰性預(yù)測(cè)值分別為97.89%、97.69%、97.74%、93.92%、99.22%,兩種檢查方法診斷下肢動(dòng)脈顯著性狹窄(≥50%)的一致性較好(Kappa=0.94,P0.05)。結(jié)論在顯示下肢動(dòng)脈狹窄方面,NCE-MRA具有與CE-MRA相近的圖像質(zhì)量和診斷準(zhǔn)確度,可以作為腎功能不全或不能使用對(duì)比劑的患者進(jìn)行下肢動(dòng)脈MRA檢查的替代方法。
[Abstract]:Objective to evaluate the value of 3.0T non-contrast magnetic resonance angiography (NCE-MRA) in the diagnosis of lower extremity artery stenosis and to provide a reliable method for clinical examination. Materials and methods 30 patients with arterial lesions of lower extremity were examined by enhanced magnetic resonance angiography (CE-MRA) after NCE-MRA. The image quality of the two methods was evaluated. The accuracy of NCE-MRA in the diagnosis of arterial stenosis (鈮，

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