Information about the heart function can be obtained using MRI techniques, however this information needs to be validated in different populations, such as patients with iron overload. If MR data show a high correlation with echocardiography and MUGA functional data, subsequent protocols could be conducted where the functional information can be gained with an MR measurement, thereby avoid acquiring a MUGA scan and eliminating the exposure to radiation as well as streamlining the protocol by just adding a few additional measurements to an already scheduled MR iron scan. Performing cardiac measurement in a few patients using the MRI technique will allow us to expand the use of this technique for future and larger studies.