This research aims to explore the factors affecting the intervention of health-care professionals regarding a radiological event and to determine what actions they cause. In line with the keywords determined, a search was conducted on Cochrane, Scopus, Web of Science, and PubMed until March 2022. Eighteen peer-reviewed articles that met the inclusion criteria were reviewed. This systematic review was conducted using the PICOS and PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses)guidelines. Of the 18 studies included in the study, 8 were cross-sectional studies, 7 were descriptive studies, 2 were interventional studies, and 1 was a systematic review. As a result of the qualitative analysis, 7 factors affecting the intervention of health-care professionals in a radiological event were identified as follows: rarity of the event; inadequacy of health-care professionals against the radiological event; sensory responses; dilemma and ethical concern; communication, workload; and other factors. The most important factor affecting the intervention of health-care professionals in a radiological event is inadequate education about a radiological event, which influences the formation of other factors. These and other factors cause actions such as delayed treatment, death, and disruption of health services. Further studies are needed on the factors affecting the intervention of health-care professionals.