title: Preface for the special issue of imaging brain aging and neurodegenerative disease.
authors.affiliation: Department of Anatomy and Neurobiology, University of Kentucky, Lexington, KY 40536, USA.
authors.forename: Brian T
authors.initials: BT
authors.lastname: Gold
authors.forename: Jeffrey N
authors.initials: JN
authors.lastname: Keller
mesh_terms: D000367:Age Factors; D006801:Humans; D019636:Neurodegenerative Diseases / Q000175:diagnosis*; D059906:Neuroimaging / Q000379:methods*