1. Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
2. Department of Physiology, Hanyang University, Seoul 04763, Republic of Korea
3. Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Rochester, MN 55905, USA
4. GE Global Research, Niskayuna, NY 12309, USA
5. GE Healthcare, 78530 Buc, France