De Cobelli F, Mellone R, Salvioni M, Vanzulli A, Sironi S, Manunta P, Lanzani C, Bianchi G, Del Maschio A
Department of Radiology, Scientific Institute H.S. Raffaele, University Hospital, Milan, Italy.
Radiology. 1996 Dec;201(3):697-703. doi: 10.1148/radiology.201.3.8939218.
To evaluate screening with three-dimensional (3D) phase-contrast magnetic resonance (MR) angiography with a phased-array multicoil to detect renal artery stenosis.
Fifty consecutive patients suspected of having renovascular disease were prospectively examined with 3D phase-contrast MR imaging with a phased-array multicoil. Findings were correlated with those at intra-arterial digital subtraction angiography (DSA) as the standard of reference for grade of stenosis.
MR angiography depicted 101 of 103 renal arteries depicted at intraarterial DSA; the two missed arteries were an accessory artery outside the imaging volume and an artery with a stent. At intraarterial DSA, a stenosis was found in 31 of 101 arteries. On the basis of findings at 3D phase-contrast MR angiography, the presence of any degree of stenosis was correctly depicted in 29 of 31 cases and the absence of stenosis was correctly depicted in 66 of 70 cases (accuracy, 94%; sensitivity, 94%; negative predictive value, 97%). Overall accuracy was 97% for correct depiction of severe renal artery stenosis (> 50%).
3D phase-contrast MR angiography with a phased-array multicoil was an accurate noninvasive screening technique in patients with suspected renal artery stenosis.
评估使用相控阵多线圈三维（3D）相位对比磁共振（MR）血管造影术检测肾动脉狭窄。
对50例连续怀疑患有肾血管疾病的患者进行前瞻性相控阵多线圈3D相位对比MR成像检查。将检查结果与动脉内数字减影血管造影（DSA）的结果进行对照，DSA作为狭窄程度的参考标准。
MR血管造影显示了动脉内DSA所显示的103条肾动脉中的101条；两条未显示的动脉一条是成像范围外的副肾动脉，另一条是有支架的动脉。在动脉内DSA检查中，101条动脉中有31条发现狭窄。根据3D相位对比MR血管造影的结果，31例中有29例正确显示了任何程度的狭窄，70例中有66例正确显示了无狭窄（准确性为94%；敏感性为94%；阴性预测值为97%）。对于严重肾动脉狭窄（>50%）的正确显示，总体准确性为97%。
相控阵多线圈3D相位对比MR血管造影术是一种用于疑似肾动脉狭窄患者的准确无创筛查技术。
