title: Editorial: Image-Guided Radiotherapy for Effective Radiotherapy Delivery.
authors.affiliation: Department of Radiation Oncology, Howard University , Washington, DC , USA.
authors.forename: Nam P
authors.initials: NP
authors.lastname: Nguyen
authors.affiliation: Department of Radiation Oncology, Marshfield Clinic , Marshfield, WI , USA.
authors.forename: Ulf Lennart
authors.initials: UL
authors.lastname: Karlsson
keywords: cancer; comorbidity; computerized axial tomography; disease-specific survival; image-guided radiotherapy