title: ACRIN: time for transition.
authors.forename: Bruce J
authors.initials: BJ
authors.lastname: Hillman
mesh_terms: D002986:Clinical Trials as Topic; D003952:Diagnostic Imaging / Q000639:trends*; D006801:Humans; D015337:Multicenter Studies as Topic; D009369:Neoplasms / Q000175:diagnosis*; D018787:Radiation Oncology / Q000639:trends*; D014481:United States