CT Angiography is a medical imaging technique that uses computed tomography (CT) to visualize the blood vessels in the body. It involves injecting a contrast dye into the bloodstream, which enhances the images of the arteries and veins. This method helps doctors diagnose conditions such as blockages, aneurysms, and other vascular diseases. The procedure is non-invasive and typically takes about 30 minutes. Patients may be asked to hold their breath briefly while the images are captured. CT Angiography is commonly used for examining the heart, brain, and lungs, providing detailed information to guide treatment decisions.