Several recent clinical studies have suggested that proper vascular stent deployment directly affects clinical outcome, and the rate of re-stenosis. These studies suggest that angiography alone is not sufficient to ensure proper vascular stent deployment, and that re-stenosis rates will decline if proper stent apposition has occurred. The importance of proper stent sizing and apposition is further emphasised with the increasing use of drug eluting stents, the drug effects of which are only realized upon contact with the arterial wall.