This article was accepted as part of our Level 1 Evidence-Based Medicine Expedited Review Program. Authors P.G. Kranz, J.D. Wylie, J.K. Hoang and A.S. Kosinski From the Departments of Radiology (P.G.K., J.D.W., J.K.H.), Radiation Oncology (J.K.H.), and Biostatistics and Bioinformatics (A.S.K.),