coronary catheter

A coronary catheter is a thin, flexible tube used by doctors to examine the coronary arteries—blood vessels that supply the heart with oxygen-rich blood. During a procedure called coronary angiography, the catheter is inserted into a blood vessel, usually in the groin or wrist, and guided to the heart. A special dye is then injected through the catheter to make the arteries visible on X-ray images, helping doctors identify blockages or narrowing that could cause heart problems. This minimally invasive procedure aids in diagnosis and planning appropriate treatment for coronary artery disease.