Although adverse reactions following contrast medium (CM) application occur regularly in routine, radiologists are in most cases not familiar with the clinical reaction patterns. Therefore, the documentation in the patients' records is often inadequate. Moreover, papers dealing with contrast medium induced side effects also reflect the poor knowledge in this field. For example, the unspecific term “adverse CM reaction” sometimes remains unclassified in the literature [1]. Furthermore, in the literature risks are mentioned which do not increase the risk for an adverse reaction, and vice versa [2,3].
