1. A computer-readable medium ( 500 ) having embodied thereon a computer program ( 501 ) for the non-invasive quantitative assessment of cardiac perfusion from a series of cardiac images comprising image segments, said computer program being for processing by a computer ( 50 ), said computer program comprising a first code segment ( 73 ) selecting at least one image segment with normal perfusion, such that cardiac perfusion parameters of the remaining image segments are based on a perfusion parameter of said at least one image segment having normal perfusion.