title: Rotation effects on the target-volume margin determination.
abstract: Rotational setup errors are usually neglected in most clinical centers. An analytical formula is developed to determine the extra margin between clinical target volume (CTV) and planning target volume (PTV) to account for setup errors. The proposed formula corrects for both translational and rotational setup errors and then incorporated into margin determination for PTV.
authors.affiliation: Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE 68198, USA; Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA. Electronic address: qinghui.zhang@gmail.com.
authors.forename: Qinghui
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA.
authors.forename: Weijun
authors.initials: W
authors.lastname: Xiong
authors.affiliation: Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA.
authors.forename: Maria F
authors.initials: MF
authors.lastname: Chan
authors.affiliation: Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA.
authors.forename: Yulin
authors.initials: Y
authors.lastname: Song
authors.affiliation: Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA.
authors.forename: Chandra
authors.initials: C
authors.lastname: Burman
mesh_terms: D054893:Cone-Beam Computed Tomography; D006801:Humans; D009369:Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods*; D061106:Radiotherapy Setup Errors; D012399:Rotation; D047368:Tumor Burden
keywords: Margin; Radiotherapy; Rotation; Setup errors; Target volume