The scan itself usually takes about 15-20 minutes, but the entire process may take up to 30 minutes, including preparation and contrast injection.

The procedure is generally painless. Patients may feel a brief sensation of warmth when the contrast dye is injected but should experience no other discomfort.

The scan uses a small dose of radiation and contrast dye, so there’s a slight risk of allergic reaction, particularly in patients allergic to iodine. People with kidney issues should inform their doctor due to the contrast dye.

Preparation may involve fasting for a few hours beforehand, and patients should remove any metal accessories. Notify your doctor of any known allergies or if you’re pregnant.