Iodine can be excreted after a CTA examination.
Contrast iodine agents can be categorized into hypertonic, hypotonic, and isotonic contrast agents. Hypertonic contrast agents are ionic monomers, hypotonic contrast agents include nonionic monomers and ionic dimers, and isotonic contrast agents are nonionic dimers. Iodine contrast agents include: iopromide, iohexol, and iodixanol. Contrast iodine agents can clearly show the morphology, outline and lesion characteristics of organs or cavities.
The contrast iodine agent is eliminated mainly through the kidneys, and the elimination of iodine can be facilitated by drinking plenty of water. Adverse reactions are usually allergic (rash, itchy skin). It is contraindicated in people who are allergic to iodine agents and in people with severe renal insufficiency. Use with caution in patients with hyperthyroidism.
If the need to improve the CTA examination, it should be under the advice of a specialized doctor.