Computed Tomography Angiography (CTA) is a medical imaging technique that combines X-ray technology with computer processing to create detailed images of blood vessels. It helps doctors visualize the flow of blood in arteries and veins, making it easier to diagnose conditions like blockages or aneurysms. During the procedure, a contrast dye is injected into a vein, which enhances the images captured by the CT scanner. CTA is a non-invasive procedure, meaning it doesn't require surgery, and it typically takes only a few minutes. Patients may experience a warm sensation when the contrast dye is injected, but the process is generally safe and well-tolerated. This imaging method is valuable for planning treatments and monitoring vascular diseases.