| Affiliation: | 1. Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania;2. Center for In-vivo Hyperpolarized Gas MR Imaging, Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia;3. Hospital of the University of Philadelphia, MRI Learning Center, 3400 Spruce St, 1 Founders Pavilion, Philadelphia, PA 19104;4. Department of Public Health Sciences, University of Virginia, Charlottesville, Virginia;5. Department of Radiology, University of Missouri School of Medicine, Columbia, Missouri |
