title: Reply.
authors.affiliation: Department of Neurology.
authors.forename: Y
authors.initials: Y
authors.lastname: Inoue
authors.affiliation: Department of Neurology.
authors.forename: M
authors.initials: M
authors.lastname: Nakajima
authors.affiliation: Department of Diagnostic Radiology.
authors.forename: T
authors.initials: T
authors.lastname: Hirai
authors.affiliation: Department of Neurology Graduate School of Medical Sciences Kumamoto University Kumamoto, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Ando