【摘要】：目的通過與增強(qiáng)磁共振血管成像(CE MRA)圖像比較,探討3.0T MR小腿血流敏感散相(FSD)MRA的可行性。方法收集20例可疑下肢動(dòng)脈疾病患者,行小腿FSD MRA及下肢CE MRA,比較其圖像質(zhì)量;并以CE MRA為診斷標(biāo)準(zhǔn),判斷FSD MRA的診斷效能。結(jié)果 FSD MRA有效FOV約為(275.93±29.76)mm,圖像質(zhì)量評(píng)價(jià)觀察者間一致性良好(Kappa=0.81,P0.01)�；谘芄�(jié)段,FSD MRA圖像質(zhì)量評(píng)分[(3.66±0.81)分]略優(yōu)于CE MRA[(3.49±0.87)分,P=0.05],可用于診斷的血管節(jié)段數(shù)間兩者差異無統(tǒng)計(jì)學(xué)意義[FSD MRA:97.65%(166/170),CEMRA:98.24%(167/170);P=0.32]�；诨颊�,FSD MRA及CE MRA的圖像質(zhì)量差異無統(tǒng)計(jì)學(xué)意義[(3.25±1.06)分vs(2.94±1.06)分,P=0.40]。血管狹窄程度評(píng)價(jià)觀察者間一致性良好(Kappa=0.81,P0.01)�；谘芄�(jié)段,FSD MRA與CE MRA對(duì)于血管狹窄程度評(píng)價(jià)的符合率為84.34%;FSD MRA檢測(cè)血管狹窄的敏感度、特異度、陽性預(yù)測(cè)值和陰性預(yù)測(cè)值分別為96.41%、93.04%、84.06%和98.53%。基于患者,FSD MRA與CE MRA評(píng)價(jià)血管狹窄程度差異無統(tǒng)計(jì)學(xué)意義[(3.27±1.10)分vs(3.27±1.10)分,P=1.00]。結(jié)論 FSD應(yīng)用于3.0T MRA可為下肢動(dòng)脈病變提供一項(xiàng)可靠的非增強(qiáng)MRA檢查方法。
[Abstract]:Objective to investigate the feasibility of 3.0T MR leg blood flow sensitive dispersion (FSD) MRA compared with contrast-enhanced magnetic resonance angiography (CE MRA). Methods 20 patients with suspected lower extremity arterial diseases were treated with leg FSD MRA and lower extremity CE MRA, to compare their image quality, and CE MRA was used as diagnostic standard to judge the diagnostic effectiveness of FSD MRA. Results the effective FOV of FSD MRA was about (275.93 鹵29.76) mm,. The consistency among observers was good (Kappa=0.81,P0.01). The, FSD MRA image quality score based on vascular segment [(3.66 鹵0.81)] was slightly better than that of CEMRA [(3.49 鹵0.87), P 鈮，

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