Reyhane Ahmadi1, Mohsen Qutbi2. 1. Department of Nuclear Medicine and Molecular Imaging, Farshchian Heart Center, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran. 2. Department of Nuclear Medicine, Taleghani Educational Hospital, School of Medicine, Shahid Beheshti University of Medical Sciences, Yaman St., Velenjak, Tehran, 1985711151, Iran. mohsen.qutbi@gmail.com.