Coronary Angiography
2026/04/21
Coronary Angiography is a diagnostic test that involves injecting a contrast dye into the bloodstream and using X-rays to create real-time images of the heart arteries. The coronary arteries are the blood vessels that supply blood to the heart muscles. On ordinary chest X-ray films, the heart appears as a silhouette, and the coronary arteries are not visible. To see the coronary arteries, a special dye or contrast medium is injected through a small tube (catheter) inserted via an artery in the groin or the wrist. The catheter is then advanced to the heart and positioned at the openings of the coronary arteries before injection is performed.
Coronary angiogram showing blocked artery (white arrow)
Coronary Angiography is typically used in more complex cases to provide precise imaging and information about a vessel’s anatomy. The injected contrast material makes it easy to see where blood is moving and where blood vessel blockages or damages are.
The procedure may cause some discomfort, especially when the contrast dye is injected. Local anaesthesia will be administered for improved comfort.
There are risks associated with coronary angiography, including allergic reactions to the contrast dye, bleeding at the catheter insertion site, and a small risk of damage to blood vessels. The procedure is considered safe but may carry more risks compared to non-invasive imaging methods.
