RT Journal Article SR Electronic T1 3T High-Spatial-Resolution Contrast-Enhanced MR Angiography of the Intracranial Venous System with Parallel Imaging JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A1147 A1 M. Lettau A1 K. Sartor A1 S. Heiland A1 S. Hähnel YR 2008 UL http://www.ajnr.org/content/early/2008/07/17/ajnr.A1147.abstract AB