[1] Beth Israel Deaconess Med Ctr, Div Cardiovasc, Cardiac MR Ctr, Dept Med, Boston, MA 02215 USA
[2] Beth Israel Deaconess Med Ctr, Dept Radiol, Boston, MA 02215 USA
[3] Harvard Univ, Sch Med, Boston, MA USA
[4] Rhein Westfal TH Aachen, Dept Radiol, Aachen, Germany
[5] EPIX Med Inc, Cambridge, MA USA