1 From the Department of Radiology, Mayo Clinic, Rochester, MN (A.K.); Medical Research Institute of New Zealand, Wellington, New Zealand, and Artibiotics, Wellington, New Zealand (C.K.); Division of Interventional Radiology, Department of Radiology, NewYork-Presbyterian Weill Cornell Medicine, New York, NY (A.S.M.); and Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, Va (A.M.G.).