An angiogram is a medical imaging technique used to visualize the inside of blood vessels and organs. It involves injecting a special dye, called a contrast agent, into the bloodstream. This dye makes the blood vessels visible on X-ray images, allowing doctors to assess conditions like blockages or abnormalities. The procedure is often performed in a hospital or specialized clinic. It can help diagnose issues related to the heart, brain, or other parts of the body. An angiogram is commonly used in conjunction with other tests, such as CT scans or MRI, to provide a comprehensive view of a patient's vascular health.