title: Erratum to: DRR and portal image registration for automatic patient positioning in radiotherapy treatment.
authors.affiliation: Tecnologías de la Información y las Comunicaciones Department, Universidad Politécnica de Cartagena, Campus Muralla del Mar Antiguo Cuartel de Antigones, s/n 30202, Cartagena, Spain, consuelo.bastida@upct.es.
authors.forename: Ma Consuelo
authors.initials: MC
authors.lastname: Bastida-Jumilla
authors.forename: Jorge
authors.initials: J
authors.lastname: Larrey-Ruiz
authors.forename: Rafael
authors.initials: R
authors.lastname: Verdú-Monedero
authors.forename: Juan
authors.initials: J
authors.lastname: Morales-Sánchez
authors.forename: José-Luis
authors.initials: JL
authors.lastname: Sancho-Gómez