1. A method of assessing rupture risk of an aneurysm from time-resolved images comprising the steps of: injecting a contrast enhancing agent into a patient with an aneurysm; acquiring a sequence of 2D X-ray images of said aneurysm over a cardiac cycle; extracting linear or area measurements of said aneurysm from said sequence of images; and correlating the extracted aneurysm measurement values to clinically known values to assess a rupture risk of said aneurysm.