DECT scan is a painless procedure that can be done in line with the preoperative scans. Disregarding the known risks of administering the contrast agent in the form of anaphylactic reactions, patients are not exposed to medical risk. Using gadolinum based contrast agents are suspected to be contributing to nephrogenic systemic fibrosis (NSF), but there is no case of this by the recent report of Committee for Medicinal Products for Human Use (CHMP) in 2007. Allergic reactions to iodinated contrast agents are described with a frequency of 0.2%, most commonly in the form of hives. Serious adverse reactions, as anaphylactic shock is described with a frequency of 0.01%.