1 From the Department of Diagnostic and Interventional Imaging, McGovern Medical School at The University of Texas Health Science Center, 6431 Fannin St, Room R172, Houston, TX 77030 (V.S.T., M.A.J.); The Russell H. Morgan Department of Radiology and Radiological Science and Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, Md (M.A.J.); Graduate School of Biomedical Sciences, MD Anderson Cancer Center, The University of Texas, Houston, Tex (M.A.J.); and Department of Computer Science, Rice University, Houston, Tex (M.A.J.).