What is the purpose of using contrast media in angiograms?

The purpose of using contrast media in angiograms is to enhance the visibility of blood vessels. When contrast agents are introduced into the vascular system, they absorb X-rays more effectively than surrounding tissues, leading to a clearer delineation of arteries and veins on the imaging results. This heightened visibility allows healthcare professionals to accurately assess the anatomy and pathology of the vascular structures being examined, aiding in diagnosis and guiding treatment decisions.

The introduction of contrast media is essential in angiography because it provides the necessary differentiation between blood vessels filled with the contrast and other soft tissues, making it much easier to identify abnormalities such as blockages, aneurysms, or malformations. This enhancement is crucial for effective interpretation of the images and for successful outcomes of subsequent interventions or treatments.