非对比增强磁共振肾动脉成像对肾动脉狭窄的诊断价值

摘要

Aim:To evaluate the renal artery imaging quality and diagnostic value for detection of renal artery stenosis (RAS) using non-enhanced inflow-sensitive inversion recovery(IFIR)-MRA, with enhanced CTA performed as the refer-ence standard.Methods:Sixty-five consecutive patients suspected of RAS underwent both of non-enhanced IFIR-MRA and enhanced CTA .Subjective image quality , renal artery depiction and renal artery grading were all evaluated on artery-by-ar-tery basis.Results:Sixty patients successfully finished the non-enhanced IFIR-MRA examination and 5 failed.A total of 126 main renal arteries were visualized on enhanced CTA and non-enhanced IFIR-MRA images in 60 patients respectively . The 2 technique had excellent consistency (Kappa=0.536 and 0.926,P<0.001).Conclusion: Non-enhanced IFIR-MRA could gain quite good renal artery imaging quality .It could be the first choice of renal artery screening method .%目的：通过与对比增强CT血管成像（ CTA）的对比，评价非对比增强流入敏感翻转恢复序列磁共振血管成像（ IFIR-MRA）技术的成像质量和对肾动脉狭窄（ RAS）的诊断价值。方法：对65例临床可疑RAS患者分别行非对比增强IFIR-MRA和对比增强CTA肾动脉检查，对两种方法的肾动脉图像质量、肾动脉显影效果和RAS程度进行对比。结果：65例患者中5例因各种原因检查失败，60例成功完成检查，共检出126支主肾动脉。对比增强CTA和非对比增强IFIR-MRA对肾动脉图像质量及RAS分级的一致性较高（Kappa＝0．536和0．926，P＜0．001）。结论：非对比增强IFIR-MRA技术为完全无创检查，对RAS具有很高的诊断价值。