RT Journal Article SR Electronic T1 Evaluation of the Occlusion Status of Coiled Intracranial Aneurysms with MR Angiography at 3T: Is Contrast Enhancement Necessary? JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A1678 A1 M.E.S. Sprengers A1 J.D. Schaafsma A1 W.J. van Rooij A1 R. van den Berg A1 G.J.E. Rinkel A1 E.M. Akkerman A1 S.P. Ferns A1 C.B.L.M. Majoie YR 2009 UL http://www.ajnr.org/content/early/2009/07/23/ajnr.A1678.abstract AB