1. From Neurospin, Bât 145, CEA-Saclay Center, Gif-sur-Yvette 91191, France (D.L.B.); Department of Radiology, Kyoto University Graduate School of Medicine, Kyoto, Japan (D.L.B.); and Department of Radiology, University of Yamanashi, Yamanashi, Japan (S.I., U.M.).