Cardiac T2* and T2-based techniques suffer from variabilities introduced by acquisition over multiple heartbeats and breath holds. We demonstrate the use of a dual-echo SMS-GESE-EPI sequence that can simultaneously provide T2*- and T2-weighted images from six slice locations within a single heartbeat and breath-hold. Introduction of 5-echos also enabled dynamic T2*- and T2-mapping per heartbeat within a breath-hold. These dynamically acquired T2*- and T2-maps remained stable over ten heartbeats. Several applications might benefit from these modified GESE sequences, such as BOLD measurements and vessel architecture imaging of the myocardium.