1. From the Department of Cardiothoracic and Vascular Surgery (T.S.S., O.K.H., E.M.P.), Department of Cardiology (K.S., E.M.P.), and MR-Center (T.S.S., E.M.P.), Aarhus University Hospital, Skejby Sygehus; and Center for Advanced Visualization and Interaction (CAVI) (S.V.T.), Aarhus, Denmark.