In the past, radiologic contrast media (RCM) were one of the most frequently reported groups of allergic reactions. With the introduction of non-ionic, low-osmolar agents, allergic reactions to these agents have declined from 12% to 0.04%. Reactions to gadolinium used in MRI scans are much lower than reactions to RCMs used in CT scans. Although reports of allergic reactions to these agents have decreased, drug reactions leading to fatal anaphylaxis can be observed.16,17 In our study, CT drugs constituted the majority of imaging agent allergy histories. One of our patients with a history of gadolinium allergy developed anaphylaxis after the use of a CT drug and died. This suggests that the history of allergy in these groups should be questioned more carefully.