Mahmoodi M, et al. - This study was carried out to ascertain organ and effective doses and to evaluate the risk of exposure-induced cancer death (REID) associated with coronary CT angiography (CCTA) examinations. Researchers conducted CCTA examinations in three stages: calcium score, monitoring, and cardiac phases for all individuals. The effective dose was determined by two methods. A sum of 185 individuals (95 men, 90 women) were recruited in this study. For women, breast doses were high at 52.04 ± 14.08 mGy. The outcomes of this research will support referring physicians justify requesting CCTA examinations by considering their advantages for diagnosis on the one hand and awareness of the risk of radiation-induced cancer on the other. Individuals and physicians should not be concerned about the radiation risks in the case of CCTA scans that are properly justified by clinical indication.