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Fig. 1B. —25-year-old woman with arterial hypertension (170 over 90 mm Hg) caused by fibromuscular dysplasia. Three-dimensional anteroposterior fast low-angle shot MR angiogram (3.8/1.49 [TR/TE], 25° flip angle, 10-sec acquisition time, 1.5-mm partition thickness) of first measurement after power injection of contrast material followed by saline solution reveals significant concentric stenosis (arrow) of right renal artery, which was slightly underestimated on contrast-enhanced MR angiography (mean value of all four observers was 51.4%). Degree of stenosis was confirmed on additional views (not shown).