RT Journal Article SR Electronic T1 Alterations of the Corpus Callosum as an MR Imaging Based Hallmark of Motor Neuron Diseases JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A2500 A1 Unrath, A. A1 Ludolph, A.C. A1 Kassubek, J. YR 2011 UL http://www.ajnr.org/content/early/2011/04/07/ajnr.A2500.abstract AB