1. From the Department of Radiology and Neuroradiology (L.G., J.B., S.M., G.S.), Department of Hand-, Replantation- and Microsurgery (M.P., A.E., F.E., A.A.), and Center for Clinical Research (C.G.), BG Klinikum Unfallkrankenhaus Berlin, Warener Str 7, 12683 Berlin, Germany; and Institute for Diagnostic Radiology and Neuroradiology (L.G., S.M.) and Department of Hand Surgery and Microsurgery (S.K., A.E.), Universitätsmedizin Greifswald, Greifswald, Germany.