Iohexol is a non-ionic, iodine-containing contrast agent that is administered orally or by injection to enhance the appearance of body structures on X-ray films.

Cytalux is known as a drug used for adult patients with ovarian cancer. However, many people still do not know clearly about the uses of Cytalux and how to use it safely and effectively.

Eosinophilic esophagitis is an inflammatory condition in which the wall of the esophagus is infiltrated with large numbers of eosinophils, first recognized in 1978. Accordingly. The purpose of X-ray is to investigate for pathological problems in the esophagus for timely examination and treatment.

Contrast agents used in CT scans are mainly water-soluble contrast agents and are administered intravascularly. Unlike contrast agents used in conventional X-rays, which can be non-water-soluble, they are mainly administered orally or by enema through natural cavities.

High-dose intravenous pyelography is a diagnostic imaging technique of the urinary system using x-rays combined with intravenous injection of contrast material to help doctors evaluate the patient's kidneys, ureters, and bladder.

Contrast agents are often used in some imaging diagnostic methods such as: X-ray, CT to help improve images, distinguish between normal and pathological images or help narrow down the diagnosis based on the contrast agent absorption characteristics of normal and pathological tissues. So when is it necessary to use contrast agents?