The angiographic catheter is used to inject contrast into the blood vessels of the heart and lungs.
The catheter consists of a flexible tube with a plastic tip through which the contrast is injected. The tip of the catheter is usually covered in a soft plastic coating to help it slide more easily through blood vessels. The catheter is connected to a syringe containing the contrast solution. The contrast is injected into an artery or vein using a pressure pump, which controls how much dye enters each vessel.
The angiogram allows doctors to see the inside of a patient's arteries, veins and heart chambers in order to diagnose and treat conditions.