We use four kinds of iodinated contrast media. They are Iopamidol (Iopamiron; Bayer Co. Ltd., Osaka, Japan), Iomeprol (Iomeron; Eisai Co. Ltd., Tokyo, Japan), Iohexial (Omnipaque; Daiichi-Sankyo Co. Ltd., Tokyo, Japan), and Ioversol (Optiray; Daiichi-Sankyo Co. Ltd., Tokyo, Japan).
Three kinds of gadolinium contrast media are used, which are Gadoterate meglumine (Magnescope; Terumo Co. Ltd., Tokyo, Japan), Gadteridol (ProHance; Eisai Co. Ltd., Tokyo, Japan), and Gadopentetate dimeglumine (Magnevist; Bayer Co. Ltd., Osaka, Japan). Selection of contrast media was based on the purpose of the examination and the patient’s weight. Although there are few data to support changing the contrast media to decrease the likelihood of a subsequent reaction in patients with a history of prior allergic-like reactions to iodinated contrast media, we usually change the contrast media administered in such cases.