Initially, the groin is injected with a local anesthetic which numbs the world, then a catheter is placed into an artery during the groin and directed in the aorta. Contrast dye is injected in the aorta, aneurysm, and blood vessels branching off of the aorta, which presents the vascular surgeon https://www.sgvascularctr.com/abdominal-aortic-aneurysm-treatment-in-singapore-a-comprehensive-guide/