Guiding transseptal puncture by 3D-overlay of the left atrium and ascending aorta by a new softwareprototype - Bourier, Felix; Brost, Alexander; Koch, Martin; Kleinöder, Andreas; Kiraly, Attila P.; Hornegger, Joachim; Strobel, Norbert; Zorger, Niels; Schneider, Hans-Jürgen; Kurzidim, Klaus (ESC Congress, 2011)