Iodinated contrast agents are substances used in medical imaging to enhance the visibility of internal structures in the body. They contain iodine, which absorbs X-rays and helps to highlight areas such as blood vessels and organs during procedures like CT scans and X-rays. These agents can be administered intravenously or orally, depending on the type of imaging required. While generally safe, some patients may experience allergic reactions or side effects, so healthcare providers assess individual risks before use. Proper hydration is often recommended to help eliminate the contrast agent from the body after the procedure.