Information Processing in Computer-Assisted Interventions 4th International Conference, IPCAI 2013, Heidelberg, Germany, June 26, 2013. Proceedings - Barratt, Dean; Cotin, Stéphane; Fichtinger, Gabor; Jannin, Pierre; Navab, Nassir (Springer Berlin Heidelberg : Imprint: Springer, 2013)