1 From the Department of Medical Imaging, University Hospital of Heraklion, Heraklion, Crete, Greece (M.E.K.); Institute of Computer Science, Foundation for Research and Technology (FORTH), Heraklion, Crete, Greece (M.E.K.); Department of Radiology, University of Crete School of Medicine, Heraklion, Crete, Greece (M.E.K.); Department of Radiology, Stanford University, Stanford, Calif (A.A.G.); NeuralSeg Ltd, Hamilton, Canada (A.A.G.); Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (A.S.T.); and Department of Radiology and Institute for Biomedical Informatics, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104-6243 (C.E.K.).