Cerebral angiography is also known as intra arterial digital subtraction angiography iadsa in cerebral angiography a catheter long thin flexible tube is inserted into an artery in the arm or leg using the catheter a technician injects a special dye into the blood vessels that lead to the brain in cerebral angiography x ray images show blood vessel abnormalities in the brain. Cerebral angiography is a diagnostic test that uses an x ray it produces a cerebral angiogram or an image that can help your doctor find blockages or other abnormalities in the blood vessels of. Diagnostic cerebral angiography cpt general patients may be symptomatic due to the lesion subarachnoid hemorrhage or cerebrovascular vasospasm or asymptomatic you should know the location and type of the cerebrovascular malformation any neurological deficits if the patient has had a subarachnoid hemorrhage and if the patient is at risk for cerebrovascular vasospasm. What is a diagnostic cerebral angiogram a diagnostic cerebral angiogram is a medical procedure that offers an extremely precise evaluation of your blood vessels cerebral angiography helps to diagnose medical conditions that involve the arteries and veins in the head and neck including the brain