Noninvasive evaluation of valve function is key in the diagnosis and choice of treatment in valvular disease. Echocardiography is the first choice to diagnose and to assess the mechanism, severity and prognosis of valvular disease. Cardiovascular magnetic resonance is used when there is inadequate quality or discrepant results with echocardiography. This chapter provides an overview on how to measure valvular flow accurately and when valvular flow can be used in clinical practice using cardiovascular magnetic resonance.