小腿平衡稳态自由进动序列非增强MR血管成像与增强MR血管成像的对比

发布时间：2019-06-14 23:22

【摘要】：目的通过与增强磁共振血管成像(CE MRA)图像比较,探讨3.0T MR小腿血流敏感散相(FSD)MRA的可行性。方法收集20例可疑下肢动脉疾病患者,行小腿FSD MRA及下肢CE MRA,比较其图像质量;并以CE MRA为诊断标准,判断FSD MRA的诊断效能。结果 FSD MRA有效FOV约为(275.93±29.76)mm,图像质量评价观察者间一致性良好(Kappa=0.81,P0.01)。基于血管节段,FSD MRA图像质量评分[(3.66±0.81)分]略优于CE MRA[(3.49±0.87)分,P=0.05],可用于诊断的血管节段数间两者差异无统计学意义[FSD MRA:97.65%(166/170),CEMRA:98.24%(167/170);P=0.32]。基于患者,FSD MRA及CE MRA的图像质量差异无统计学意义[(3.25±1.06)分vs(2.94±1.06)分,P=0.40]。血管狭窄程度评价观察者间一致性良好(Kappa=0.81,P0.01)。基于血管节段,FSD MRA与CE MRA对于血管狭窄程度评价的符合率为84.34%;FSD MRA检测血管狭窄的敏感度、特异度、阳性预测值和阴性预测值分别为96.41%、93.04%、84.06%和98.53%。基于患者,FSD MRA与CE MRA评价血管狭窄程度差异无统计学意义[(3.27±1.10)分vs(3.27±1.10)分,P=1.00]。结论 FSD应用于3.0T MRA可为下肢动脉病变提供一项可靠的非增强MRA检查方法。
[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 卤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 卤0.81)] was slightly better than that of CEMRA [(3.49 卤0.87), P 鈮，

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