CT Angiogram - This is an exciting new technology that uses x-ray to see arteries and veins, but without the need to place a catheter in the body. Using sophisticated computerized technology and a small IV injection of x-ray dye, almost any blood vessel can be evaluated virtually without risk. The entire procedure takes 10-15 minutes and requires no hospitalization. The interventional radiologist is the specialist who reads the CT Angiogram and interprets the results.