Squillaci E, Maspes F, Crecco M, Pocek M, Squillaci S, Simonetti G
Istituto di Radiologia, Università di Roma Tor Vergata.
Radiol Med. 1992 Sep;84(3):282-9.
Magnetic resonance angiography of the renal arteries was performed in 10 healthy subjects, 10 patients with renal artery stenosis and 2 patients with accessory renal artery (1 unilateral, 1 bilateral). All patients selected among 35 subjects with suspected renovascular hypertension had previously undergone digital subtraction angiography. Four patients were studied before and after percutaneous transluminal angioplasty. MRA was performed with time-of-flight technique, with 2D and 3D FISP and 2D FLASH gradient-echo sequences. Digital subtraction angiography demonstrated stenoses ranging 40% to 90% in 10 cases, 7 unilateral (1 transplanted kidney) and 3 bilateral. RA correctly depicted > 90% stenoses in 5 cases, between 50% and 90% stenoses in 2 cases and < 50% in 2 cases. Four stenoses were not properly graded (3 over-graded and 1 not visualized because distal to ostium). Diagnostic accuracy was 71% for unilateral stenoses and 66% for bilateral stenoses (overall accuracy 69.2%).
对10名健康受试者、10名肾动脉狭窄患者和2名副肾动脉患者（1例单侧，1例双侧）进行了肾动脉磁共振血管造影。在35名疑似肾血管性高血压的受试者中选择的所有患者此前均接受了数字减影血管造影。对4名患者在经皮腔内血管成形术前后进行了研究。采用飞行时间技术、2D和3D FISP以及2D FLASH梯度回波序列进行磁共振血管造影。数字减影血管造影显示10例患者的狭窄范围为40%至90%，其中7例单侧（1例移植肾），3例双侧。磁共振血管造影正确显示5例>90%的狭窄、2例50%至90%的狭窄和2例<50%的狭窄。4例狭窄分级不正确（3例高估，1例因位于开口远端未显影）。单侧狭窄的诊断准确率为71%，双侧狭窄的诊断准确率为66%（总体准确率69.2%）。
