Why is an angiogram performed?

Diagnosis. An angiogram is an invasive diagnostic test, perfomed in a catheterization laboratory using fluoroscopy (the x-ray) and an injected contrast dye to evaluate the vasular system. It is possible to perform angiograms for different parts of the body, such as the left and/or right heart, the aorta, selective veins such as the subclavian, the renal artery and peripheral angiograms (the limbs) as well.
LookingforAdvancedDs. Artery ds is within artery walls & does not show on angiograms. Angiogram means blood picture; pictures show a 2d image, still or motion, of dye added into the blood, so that the dye/blood column shows on x-ray. After artery disease very advanced, ruptures of artery wall lining occur shedding debies & inducing clots which narrow the artery opening. Angiograms can detect advanced disease problems.