Outline Conventional minimally invasive cardiac

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Outline Conventional minimally invasive cardiac Powered By Docstoc
					                                                                                                                                6-10-2011




                                                                                         Outline
KU Leuven                                                                   KU Leuven



                                                                                         Conventional minimally invasive cardiac
                     specific image-
             Patient specific image-guided
                             ‐
                             ‐
                                                                                         (ablation) therapy
                    cardiac therapy
                                                                                                       patient-
                                                                                         Acquiring 3D patient-specific anatomy
                                                                                         Augmented reality guidance (LARCA)
                                    Stijn De Buck                                          Diagnosis
                           Post-
                           Post-doctoral researcher
                                                                                           Treatment planning
                 Medical Imaging Research Center – Cardiology                              Guidance
                                 stijn.debuck@uzleuven.be
                                                                                         Other application
                                                                                         Conclusion




            Conventional minimally                                                       Arrhythmia treatment by
KU Leuven
            invasive cardiac therapy                                        KU Leuven
                                                                                         cardiac ablation therapy
                                                            Limited
                                                            anatomic info
                                                            Contrast
                                                            imaging
                                                            needed
                                                            Provides only                 Start of the LARCA project
                                                            2D info                     “Leuven Augmented Reality Catheter
                                                            Increased                     Ablation”
                                                            mental load




            Patient-specific 3D
            Patient-                                                                     Patient-specific 3D
                                                                                         Patient-
KU Leuven
            geometry                                                        KU Leuven
                                                                                         geometry
            Pre-operative imaging: MR
            Pre-                                                                                                         C-
                                                                                         Interventional 3D imaging: use C-arm to
                                                                                         acquire sequence of 2D projection
             Automatically aligned to one
             another to compensate for                                                   images and reconstruct 3D
             differences in breath hold
             position                                                                    Cost-effective due to shorter hospital stay
                                                                                         Cost-
                                                                                         & simplified workflow
                                                                             How is it done ?

                                                                                         Obtain temporary cardiac standstill:
                                                                                           Rapid pacing
                                                                                           Adenosine administration




                                                                                                                                       1
                                                                                                                                             6-10-2011




            Augmented reality
                                                                              Treatment planning
KU Leuven
            guidance                                              KU Leuven


                                                                               Manual annotation of
                                              Alignment by
                                              point-based &                    target ablation lines
                                                interactive
                                               registration                        Based on result of
                                                 methods                           diagnostic investigation
                                                                                   Based on anatomy
                                                                               Automated planning by
                                                                               statistical shape and
                                                                               intensity information
                                                                                                                                              8
                                 K.U.Leuven                                                                   K.U.Leuven




            Ablation guidance                                                 Other LARCA features
KU Leuven                                                         KU Leuven


                                               Targeting                       Semi-                      intra-
                                                                               Semi-automated mapping of intra-cardiac
                                               individual                      ECG data onto 3D model to facilitate
                                               ablation points                 mapping and interpretation
                                               Recording                                          image-
                                                                               AR 3D feedback by image-based
                                               performed                       catheter tracking
                                               actions                         Respiration compensation by motion
                                               Visualization of                estimation and prediction
                                               ‘critical’
                                               structures
                                 K.U.Leuven                                                                   K.U.Leuven




            Conclusion                                                        Acknowledgements
KU Leuven                                                         KU Leuven

                                                                          Hein Heidbuchel               Stijn De Buck         Jan Bogaert
            AR solution (LARCA) to guide minimally
                                                                              Dieter Nuyens                                   Steven Dymarkowski
            invasive cardiac interventions integrating                                                  Frederik Maes

            patient-specific 3D anatomical models,
            patient-                                                             Joris Ector        Johannes Keustermans

            currently clinically used (> 350 patients)                    André LaGerche

              Cost-
              Cost-effective (standard resterilizable
              catheters + shorter hospital stay)
              Safe (visualization of critical structures)
              Accurate treatment                                                               University Hospital Gasthuisberg
              Versatile
                                 K.U.Leuven                                                             LEUVEN




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