1. A method for classifying plaque in a blood vessel of a living subject, comprising the steps of: obtaining data for a first magnetic resonance image with a first intensity distribution of a cross-section of a vessel containing plaque in a living subject; injecting contrast agent into the vascular system of said subject; obtaining data for a second magnetic resonance image of said cross-section of said vessel with a second intensity distribution after a first time duration following injection of said contrast agent; obtaining data for a third magnetic resonance image of said cross-section of said vessel with a third intensity distribution after a second time duration following injection of said contrast agent; and classifying said plaque dependent on said first, second and third intensity distributions.