Renal artery stenosis: evaluation with conventional angiography versus gadolinium-enhanced MR angiography. - Gilfeather,M.; Yoon,H.C.; Siegelman,E.S.; Axel,L.; Stolpen,A.H.; Shlansky-Goldberg,R.D.; Baum,R.A.; Soulen,M.C.; Schnall,M.D. (Radiology, 1999)