Patients - Contrast Injections
Contrast media is used in a number of types of examinations to highlight blood vessels and blood flow in various parts of the body. Contrast is a clear fluid that shows up as white on x-ray images. It is usually given via an injection into a vein in the arm.
Patients are advised to expect a sensation of heat, an unusual taste or smell, or a sensation in their bladder during and immediately following the contrast injection. These symptoms are considered normal and last for only a short period of time.
The contrast is filtered from the body by the kidneys and is excreted in the urine within 3-5 hours of the initial injection. Patients are encouraged to drink additional clear fluids following their examination to assist kidney filtration.