Abdelhamid H. Elgazzar, MD, FCAP, is Professor and Chairman of the Department of Nuclear Medicine at Kuwait University. He graduated in 1973 from the School of Medicine, University of Cairo, Egypt and trained in Clinical and Anatomic Pathology at the University of Kansas School of Medicine-Wichita and in Nuclear Medicine at the University of Cincinnati School of Medicine. He is board certified by the American Board of Pathology (Anatomic and Clinical) and the American Board of Nuclear Medicine. Dr. Elgazzar is a fellow of the College of American Pathologists. He has served as an Associate Professor at the University of Cincinnati, Ohio, and Mount Sinai School of Medicine, New York, and as Chief of Nuclear Medicine at Tufts-New England Medical Center, Boston, MA. He has received awards from several international professional organizations. He has edited or authored eight books and over 150 peer-reviewed papers. He serves as a referee for various peer-reviewed medical journals worldwide.Saud Alenezi, MB, ChB, FRCPC, ABNM, is an Assistant Professor at the Department of Nuclear Medicine at Kuwait University. He graduated in 2005 from the Faculty of Medicine, Kuwait University and trained in Nuclear Medicine at the University of Western Ontario, Canada. He is board certified by the American Board of Nuclear Medicine and is a fellow of the Royal College of Physicians of Canada.