title: Authors' Reply.
authors.affiliation: Chair, ACR Committee on DI/IR Appropriateness Criteria, Tufts Medical Center, Boston, Massachusetts.
authors.forename: E Kent
authors.initials: EK
authors.lastname: Yucel
authors.affiliation: Specialty Chair, ACR Appropriateness Criteria Neurologic Imaging Panels, University of Cincinnati Medical Center, Cincinnati, Ohio.
authors.forename: Rebecca S
authors.initials: RS
authors.lastname: Cornelius
authors.affiliation: Former Chair, ACR Appropriateness Criteria Neurologic Imaging Panels, Mallinckrodt Institute of Radiology, Saint Louis, Missouri.
authors.forename: Franz J
authors.initials: FJ
authors.lastname: Wippold
authors.affiliation: Vice Chair, ACR Commission on Nuclear Medicine and Molecular Imaging, The Johns Hopkins Medical Institution, Baltimore, Maryland.
authors.forename: Rathan M
authors.initials: RM
authors.lastname: Subramaniam
mesh_terms: D003704:Dementia / Q000175:diagnosis*; D006801:Humans; D009069:Movement Disorders / Q000175:diagnosis*; D019636:Neurodegenerative Diseases / Q000175:diagnosis*; D059906:Neuroimaging / Q000592:standards*; D017410:Practice Guidelines as Topic; D011871:Radiology / Q000592:standards*