Receiver operating characteristic curves for all observers based on imaging software for the groups tested: (A) UR, (B) GP, (C) Post and (D) overall results for all groups together. Dolphin (Dolphin Imaging & Management Solutions, v. 11.5) is manufactured by Patterson Dental Supply, Inc., St Paul, MN; InVivo (InVivoDental, v. 5.0) by Anatomage Inc., San Jose, CA; KDIS3D (Kodak Dental Imaging Software 3D module, v. 2.1.11) by Carestream Health Inc., Rochester, NY; and Xoran (Xoran CAT™, v. 3.0.34) by Xoran Technologies, Ann Arbor, MI