title: In reply to Zagar and Marks.
authors.forename: Feng Ming Spring
authors.initials: FM
authors.lastname: Kong
authors.forename: Timothy
authors.initials: T
authors.lastname: Ritter
authors.forename: Douglas
authors.initials: D
authors.lastname: Quint
authors.forename: Lon
authors.initials: L
authors.lastname: Marsh
authors.forename: Suresh
authors.initials: S
authors.lastname: Senan
authors.forename: Laurie
authors.initials: L
authors.lastname: Gaspar
authors.forename: Ritsuko
authors.initials: R
authors.lastname: Komaki
authors.forename: Coen
authors.initials: C
authors.lastname: Hurkmans
authors.forename: Robert
authors.initials: R
authors.lastname: Timmerman
authors.forename: Hak
authors.initials: H
authors.lastname: Choy
authors.forename: Andrea
authors.initials: A
authors.lastname: Bezjak
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Bradley
authors.forename: Benjamin
authors.initials: B
authors.lastname: Mosvas
authors.forename: Paul
authors.initials: P
authors.lastname: Okunieff
authors.forename: Walter
authors.initials: W
authors.lastname: Curran
mesh_terms: D001917:Brachial Plexus / Q000000981:diagnostic imaging*; D004947:Esophagus / Q000000981:diagnostic imaging*; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D008488:Medical Illustration; D058958:Organs at Risk / Q000000981:diagnostic imaging*; D011859:Radiography; D012272:Ribs / Q000000981:diagnostic imaging*; D013116:Spinal Cord / Q000000981:diagnostic imaging*