Augmented Environments for Computer-Assisted Interventions 6th International Workshop, AE-CAI 2011, Held in Conjunction with MICCAI 2011, Toronto, ON, Canada, September 22, 2011, Revised Selected Papers - Linte, Cristian A.; Moore, John T.; Chen, Elvis C. S.; Holmes, David R. (Springer Berlin Heidelberg : Imprint: Springer, 2012)