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Fig. 4B —68-year-old man with severe stenosis of left renal artery. Anteroposterior maximum intensity projections of coronal 3D MR angiograms of abdominal aorta and renal arteries obtained with 0.2 mmol/kg of gadodiamide at 1.5 T (A) and 0.1 mmol/kg of gadodiamide at 3 T (B) show stenosis (arrow) equally well.