下肢动脉3.0T Delta-Flow非增强磁共振血管成像的应用:与增强磁共振血管成像对照研究
发布时间:2019-07-18 21:28
【摘要】:目的评估3.0T非增强磁共振血管成像(NCE-MRA)诊断下肢动脉狭窄的价值,为临床提供可靠的检查方法。资料与方法 30例拟诊为下肢动脉病变的患者行NCE-MRA检查后接受增强磁共振血管成像(CE-MRA)检查,评价两种检查方法的图像质量,并以CE-MRA为标准,评估NCE-MRA诊断动脉显著性狭窄(≥50%)的准确度,分析两者诊断动脉显著性狭窄(≥50%)的一致性。结果 30例患者成功完成NCE-MRA和CE-MRA检查,NCE-MRA具有诊断价值的动脉节段有532个。小腿段NCE-MRA图像静脉污染较CE-MRA少(Z=4.92,P0.01),腹盆部、大腿段NCE-MRA图像静脉污染较CE-MRA多(Z=4.58、3.56,P0.01)。NCEMRA诊断下肢动脉显著性狭窄(≥50%)的敏感度、特异度、准确度、阳性预测值、阴性预测值分别为97.89%、97.69%、97.74%、93.92%、99.22%,两种检查方法诊断下肢动脉显著性狭窄(≥50%)的一致性较好(Kappa=0.94,P0.05)。结论在显示下肢动脉狭窄方面,NCE-MRA具有与CE-MRA相近的图像质量和诊断准确度,可以作为肾功能不全或不能使用对比剂的患者进行下肢动脉MRA检查的替代方法。
[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,
本文编号:2516080
[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,
本文编号:2516080
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