1. Pohang University of Science and Technology, Departments of Electrical Engineering and Creative IT Engineering, 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, 790-784, Republic of Korea
2. State University of New York, The University at Buffalo, Department of Biomedical Engineering, Buffalo, New York 14260
3. University of Toronto, Department of Medical Biophysics, Toronto M5S 1A1, Canada
4. Samsung Medison, Seoul, 135-851, Republic of Korea
5. Sunnybrook Health Sciences Center, Toronto M5S 1A1, Canada
6. University of Toronto, Department of Medical Biophysics, Toronto M5S 1A1, CanadaeSunnybrook Health Sciences Center, Toronto M5S 1A1, Canada