Angiogram (Angiography)

An angiogram is an imaging test that uses X-rays and contrast dye to view blood vessels. It is often performed to detect blockages, aneurysms, or narrowing in arteries and veins, particularly in the heart (coronary angiogram), brain, or legs.

• You may need to avoid food or drink for 6–8 hours before the test.
• Inform your doctor if you have allergies, kidney problems, or are taking blood thinners.
• You may be asked to stop certain medications before the procedure.
• Arrange for transportation home, as sedation or anesthesia may be used.

A catheter is inserted into a blood vessel, usually in the groin or wrist, and guided to the target area. Contrast dye is injected, and X-ray images are taken to show blood flow. The test usually lasts 30–60 minutes. You may feel a warm sensation when the dye is injected.

• Bleeding or bruising at the catheter site.
• Allergic reaction to contrast dye.
• Kidney damage in patients with pre-existing kidney disease.
• Rare risk of stroke or heart attack during the procedure.

Your doctor will review the angiogram images and discuss whether further treatment-such as angioplasty, stenting, or surgery-is needed.