Arlart I P, Guhl L, Hausmann R
Radiologisches Institut, Katharinenhospital, Stuttgart.
Rofo. 1992 Jul;157(1):59-64. doi: 10.1055/s-2008-1032966.
This study was carried out to evaluate time-of-flight RA in renal artery stenosis (RAS) in selected hypertensive patients (n = 41). In i.a. DSA studies, 10 unilateral, 8 bilateral RAS, and 4 unilateral RA occlusions were proven. MRA was done in coronal and axial 2D technique (FLASH), and in 3D technique (FISP) using GE-pulse sequences. DSA results were correlated with both 2D-individual slices, 2D- and 3D-MIP angiograms. Highest sensitivity and specificity was found for the axial 2D individual slice analysis (88%, 85% resp.), followed by the 3D-MIP MRA (78%, 80% resp.), and axial 2D-MIP MRA (73%, 79% resp.). MRA of renal arteries used in this study shows to be not adequate to DSA results due to many drawbacks. All MRA techniques, in particular the 3D-technique, tend to overestimate RAS occasionally pretending occlusions.
本研究旨在评估选定高血压患者（n = 41）肾动脉狭窄（RAS）中的飞行时间RA。在数字减影血管造影（DSA）研究中，证实有10例单侧、8例双侧RAS以及4例单侧RA闭塞。使用GE脉冲序列，以冠状面和轴面二维技术（快速低角度激发序列）以及三维技术（快速成像稳态进动序列）进行磁共振血管造影（MRA）。DSA结果与二维单层面、二维和三维最大密度投影血管造影进行了对比。发现轴面二维单层面分析的敏感性和特异性最高（分别为88%和85%），其次是三维最大密度投影MRA（分别为78%和80%）以及轴面二维最大密度投影MRA（分别为73%和79%）。由于存在诸多缺陷，本研究中使用的肾动脉MRA结果与DSA结果不符。所有MRA技术，尤其是三维技术，偶尔会高估RAS，甚至假拟闭塞。
