Abstract: A method for operating a Magnetic Resonance (MR) imaging system including generating radio frequency (RF) excitation pulses in a volume of patient anatomy that includes a patient's heart to provide subsequent acquisition of associated RF echo data and generating slice select magnetic field gradients for phase encoding and readout RF data acquisition in the volume of patient anatomy. The method also includes acquiring a plurality of slices of an image of the volume of patient anatomy within a plurality of cycles representing time period between successive beats of the patient's heart. The method also includes causing, by a control processor, accelerated acquisition of two or more slices of the plurality of slices within a quiescent phase of each of the plurality of cycles. The method further includes applying, by the control processor, one or more saturation areas proximate to a target volume of the patient anatomy.

Abstract: A surgical instrument has a shaft with a longitudinal axis, a proximal end, and a distal end. The shaft is rotatable about its longitudinal axis by user manipulation of the proximal end. A tissue retainer is positioned at the distal end and is rotatable with the shaft. The retainer has a curved portion that extends around a retainer axis, a tissue holding space within the curved portion, and an entry opening into the holding space. The retainer is configured to be received over and at least partly circumvent a target structure of a surgical field received in the holding space via the entry opening. A surgical component is positioned on a portion of the retainer laterally offset from both the retainer axis and the holding space, is rotatable with rotation of the shaft and retainer and is selectively energizeable to dissect selected tissue.