What Student Need to Know about Digital Subtraction Angiography DSA In Radio Diagnosis.

Digital Subtraction Angiography (DSA) Provides an image of the blood vessels in the brain to detect a problem with blood flow. The procedure involves inserting a catheter (a small, thin tube) into an artery in the leg and passing it up to the blood vessels in the brain. A contrast dye is injected through the catheter and X-ray images are taken of the blood vessels. Digital Subtraction Angiography (DSA) is a fluoroscopic technique that uses complex X-Ray machines to provide clear images of the inner surface of the blood vessels, also called lumen. This technique provides clear picture of the arteries, veins, as well as the four chambers of the heart. This technique is widely used in interventional radiology since it helps to eliminate radiopaque structures like bones and provide an accurate image of the blood vessels in question. The procedure is performed by using a catheter – a small, flexible, narrow tube – which is inserted into an artery in the leg and allowed to flow to up to the blood vessels in t