From the Department of Radiology, University of Wisconsin School of Medicine and Public Health, 1111 Highland Ave, Madison, WI 53705-2275 (F.L., A.S., D.B., W.L., A.K., K.L., S.K., R.K.); and Department of Biomedical Engineering, University of Minnesota, Minneapolis, Minn (Z.Z.). (At 2018-10)