title: Reply.
authors.affiliation: Unit of Neuroimaging and Neurointervention Azienda Ospedaliera Universitaria Senese University of Siena, Policlinico "Santa Maria alle Scotte" Siena, Italy.
authors.forename: S
authors.identifier: http://orcid.org/0000-0002-4721-1425
authors.initials: S
authors.lastname: Bracco
authors.affiliation: Department of Molecular and Developmental Medicine University of Siena Siena, Italy.
authors.forename: E
authors.identifier: http://orcid.org/0000-0002-9681-4556
authors.initials: E
authors.lastname: Bertelli