Diffusion Imaging of Nigral Alterations in Early Parkinson’s Disease with Dopaminergic Deficits

Schuff N, Wu IW, Foster ED, Coffey CS, Gitelman DR, Mendick S, Seibyl J, Simuni T, Zhang Y, Jankovic J, Hunter C, Tanner CM, Rees L, Factor S, Berg D, Wurster I, Gauss K, Sprenger F, Seppi K, Poewe W, Mollenhauer B, Knake S, Mari Z, McCoy A, Rowe D, Ranola M, and Marek K