Rapid quantitative evaluations of heart function are carried out with strain measurements from Magnetic Resonance Imaging (MRI) images using a circuit at least partially onboard or in communication with an MRI Scanner and in communication with the at least one display, the circuit including at least one processor that: obtains a plurality of series of MRI images of long and short axis planes of a heart of a patient, with each series of the MRI images is taken over a different single beat of the heart of the patient during an image session that is five minutes or less of active scan time and with the patient in a bore of the MRI Scanner； measures strain of myocardial heart tissue of the heart of the patient based on the plurality of series of MRI images of the heart of the patient； and generates longitudinal and circumferential heart models with a plurality of adjacent compartments, wherein the compartments are color-coded based on the measured strain.
