造影CT検査は悪性腫瘍の質的診断や病期診断,解離性動脈瘤の診断に欠かせない.しかし,ヨード造影剤で重篤な副作用が生じる危険性がある.気管支喘息など危険因子はいわれているものの,実際,副作用発現は予測不能である.今回,我々は,ここ8ヶ月の間にヨード造影剤による重篤なアナフィラキシーショックを生じた3例を経験したので文献的考察を加えて報告する.Recently, iodinated contrast media are necessary for CT examinations and they occupy an important position in the radiological diagnosis. Nonionic contrast media significantly reduce the prevalence of all degree of adverse reaction to contrast media rather than ionic contrast media. So, generally, iodinated contrast media are safe and widely used, but adverse reaction after intravenous iodinated contrast media are not uncommon. Severe and potentially life-threatening reaction occur by using the iodinated contrast media practically. Patients at risk must be identified before the contrast media study, and all possible measures must be taken to deal effectively with spontaneous anaphylactic reactions. We report three cases of anaphylactic reactions by iodinated contrast media on CT
