1. From the Department of Diagnostic and Interventional Radiology (A.S.K., H.H., K.S.L., T.S.P., P.J.K., P.G., B.P., R.S., T.A.B., J.P.G.) and Department of Trauma, Hand, Plastic and Reconstructive Surgery (J.S.), University Hospital Würzburg, Oberdürrbacher Strasse 6, 97080 Würzburg, Germany; and the Department of Radiology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany (R.S.).