Intraoperative Sensoranalyse und Registrierung

Partner: Universitätsklinikum Heidelberg, Chirurgische Klinik

Inhalt

Surface reconstruction
Initial Registration
Image-based Bowel Measurement

For surgeons, minimally-invasive surgeries are a complex medical procedure. Context-aware assistance systems aim to alleviate some of the difficulties the surgeon faces e.g. providing assistance during navigation or provide the surgeon with live measurements. To provide the surgeon with correct navigation information, the pre-operative model has to be registered to an intra-operative model of the patient anatomy. We have developed methods for building such a model from laparoscopic images. In real-time, we construct a 3D surface model from images captured from a stereo-endoscope. This model captures soft-tissue deformation and can then be used for biomechanical modelling.

To ensure that the right information is provided at the right time, the current phase of the intervention has to be known. Here, we focus on locating and classifying the surgical tools currently in use since they are both key components of both an activity-based phase recognition and assistance generation. Furthmore, we are developing methods for segmenting other objects (organs, clips, nets, needles, instruments, ...) in the laparoscopic video. This information can then be fused with surgical device information (e.g. provided from the OR1 from Karl Storz) and then used for context-aware assistance.

During laparoscopy, the surgeon loses his depth perception, since he is limited to the view provided by a conventional monitor. Multiple types of interventions, such as the Roux-En-Y Bypass, require the surgeon to estimate distances. To generate a quantitative assistance function, we combined our 3D surface model with the detected instruments, which allows us to measure distances along the surface of an organ, for example the bowel.

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    AuthorTitleYearJournal/Proceedings
    Bodenstedt, S., Padoy, N. & Hager, G. Evaluation of a Learning-based Partially Automated Approach for Assistance in Tele-Robotic Manipulation
    [BibTeX]
    2012 M2CAI MICCAI Workshop: Modeling and Monitoring of Computer Assisted Interventions 
    Bodenstedt, S., Padoy, N. & Hager, G. Learned Partial Automation for Shared Control in Tele-Robotic Manipulation
    [BibTeX]
    2012 AAAI Fall Symposium on Robots Learning Interactively from Human Teachers 
    Bodenstedt, S., Röhl, S., Suwelack, S., Katic, D., Kenngott, H., Müller-Stich, B., Dillmann, R. & Speidel, S. A flexible framework for multiple sensor integration into a context-aware CAS-System
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    2011 Computer Assisted Radiology and Surgery (CARS) 
    Burgert, O., Gockel, T., Salb, T., Dillmann, R., Hassfeld, S. & Mühling, J. Volumetric Implant-Planning Based on Symmetry Considerations
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    2002 Proceedings MMVR 
    Burgert, O., Salb, T., Gockel, T., Dillmann, R., Hassfeld, S. & Mühling, J. Symmetry Considerations for Volumetric Implant-Planning
    [BibTeX]
    2002 Proceedings BMT 
    Burgert, O., Salb, T., Gockel, T., Dillmann, Rü., Haßfeld, S., Brief, J., Krempien, R., Walz, S. & Mühling, J. A system for facial reconstruction using distraction and symmetry considerations
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    2001 CARS, pp. 62-67 
    Burgert, O., Seifert, S., Dillmann, R., Eggers, G., Hassfeld, S. & Mühling, J. Planning of Implants and Grafts replacing Bones and Soft Tissue using Volumetric Data
    [BibTeX]
    2004 Proc. IEEE Engineering in Medicine and Biology (EMBC) 
    Burgert, O., Seifert, S., Salb, T., Gockel, T., Dillmann, R., Hassfeld, S. & Mühling, J. A VR-System Supporting Symmetry Related Cranio-Maxillofacial Surgery
    [BibTeX]
    2003 Proc. Medicine Meets Virtual Reality (MMVR) 
    Burgert, O., Seifert, S., Salb, T., Unterhinninghofen, R., Gockel, T., Dillmann, R., Hassfeld, S. & Mühling, J. A System for Preoperative Planning of Soft Tissue and Bone Implantats
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    2003 Proc. Computer Assisted Radiology and Surgery (CARS) 
    Burgert, O., Seifert, S., Unterhinninghofen, R. & Dillmann, R. Untersuchung der mechanischen Eigenschaften von Weichgewebe mittels Laserscanner
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    2004 Proceedings BMT 
    Burgert, O., T.Salb, T.Gockel, S.Seifert, R.Dillmann, S.Hassfeld & J.Mühling Implantatplanung für Weichteilgewebe und Knochenstrukturen
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    2002 Proceedings CURAC 
    Delles, M., Ek, I., Katic, D., Ley, S., Unterhinninghofen, R. & Dillmann, R. MRI-based hemodynamical diagnostics using automated positioning of blood vessel cross-sections
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    2011 Proc. Computer Assisted Radiology and Surgery (CARS)
    Vol. 6(1) 
    Delles, M., Rengier, F., von Tengg-Kobligk, H., Ley, S., Kauczor, H.-U., Unterhinninghofen, R. & Dillmann, R. Quadratic phase offset error correction of velocity-encoded magnetic resonance imaging data
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    2009 Proc. Computer Assisted Radiology and Surgery (CARS) 
    Dillmann, R. Virtuelle Realität - Ein neuer Arbeitsplatz zur Simulation und Visualisierung in der Medizin
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    1994 VDE Fachbericht
    Vol. 46, pp. 125 -132 
    Dillmann, R., Burgert, O. & Salb, T. A System for Robot Assisted Intervention in Craniofacial Surgery
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    2000 Proc. Of the workshop on Service Automationn and Robotics, pp. 33 - 42 
    Dillmann, R., Katic1, D., Kämpgen, B., Speidel, S., Rettinger, A., Mueller-Stich, B., Kenngott, H. & Studer, R. Wissensbasierter Ansatz des SFB/TRR 125
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    2012 CURAC 
    Evers, H., Weingärtner, T., Salb, T., Mayer, A., Gieß, C., Meinzer, H. & Dillmann, R. Interaktive Visualisierung und Simulation zur Planung chirurgischer Eingriffe
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    1999
    Vol. 14Informatik Forschung und Entwicklung, pp. 9 - 15 
    Fritz, D., Kroll, J., R.Dillmann & M.Scheuering Automatic 4D Segmentation of the Left Ventricle in Cardiac-CT Data
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    2007 Proc. SPIE Medical Imaging 
    Fritz, D., Rinck, D., Dillmann, R. & Scheuering, M. Segmentation of the left and right cardiac ventricle using a combined bi-temporal statistical model
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    2006 Proc. SPIE Medical Imaging 
    Fritz, D., Rinck, D., Unterhinninghofen, R., Dillmann, R. & Scheuering, M. Automatic Segmentation of the Left Ventricle and Computation of Diagnostic Parameters Using Regiongrowing and a Statistical Model
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    2005 Proc. SPIE Medical Imaging 
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    2008
    Vol. 6916Proc. SPIE Medical Imaging 
    Fritzsche, K., von Wangenheim, A., Dillmann, R. & Unterhinninghofen, R. Automated MRI-Based Quantification of the Cerebral Atrophy Providing Diagnostic Information on Mild Cognitive Impairment and Alzheimer's Disease
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    2006 Computer-Based Medical Systems, 2006. CBMS 2006. 19th IEEE International Symposium on 
    Gockel, T., T.Salb, Weyrich, T., Burgert, O. & Dillmann, R. Interactive Simulation of Teeth Cleaning
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    2001 Proceedings CARS 
    Groch, A., Hempel, S., Speidel, S., Haase, S., Kenngott, H., Seitel, A., Röhl, S., Wagner, M., Kilgus, T., Yung, K., Bodenstedt, S., Mueller-Stich, B., Meinzer, H.-P., Hornegger, J. & Maier-Hein, L. Oberflächenrekonstruktion für minimal-invasive Navigationssysteme
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    2011 CURAC 
    Groch, A., Hempel, S., Speidel, S., Höller, K., Engelbrecht, R., Penne, J., Seitel, A., Röhl, S., Yung, K., Bodenstedt, S., Pflaum, F., Kilgus, T., Meinzer, H.-P., Hornegger, J. & Maier-Hein, L. In-vitro Evaluation von endoskopischer Oberflächenrekonstruktion mittels Time-of-Flight Kameratechnik
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    2011 Bildverarbeitung für die Medizin 
    Groch, A., Seitel, A., Hempel, S., Speidel, S., Engelbrecht, R., Penne, J., Höller, K., Röhl, S., Yung, K., Bodenstedt, S., Pflaum, F., dos Santos, T., Mersmann, S., Meinzer, H.-P., Hornegger, J. & Maier-Hein, L. 3D-Surface Reconstruction for Laparoscopic Computer-Assisted Interventaion: Comparision of State-of-the- Art Methods
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    2011 SPIE Medical Imaging 
    Hazer, D., Bauer, M., Unterhinninghofen, R., Dillmann, R. & Richter, G.M. Image-based biomechanical modeling of aortic wall stress and vessel deformation: Response to pulsatile arterial pressure simulations
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    2008
    Vol. 6916Proc. SPIE Medical Imaging 
    Hazer, D., Bondarenko, O., Kroeger, R., Dillmann, R. & Richter, G. Grid analysis for mesh-independent and stable CFD simulations in the aorta
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    2007 Proc. Computer- und Roboterassistierte Chirurgie (CURAC) 
    Hazer, D., Finol, E.A., Kostrzewa, M., Kopaigorenko, M., Richter, G.M. & Dillmann, R. Computational Biomechanics and Experimental Validation of Vessel Deformation based on 4D-CT Imaging of the Porcine Aorta
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    2009 Proc. SPIE Medical Imaging
    Vol. 7262 
    Hazer, D., Kroeger, R., Unterhinninghofen, R., Kurz, P., Dillmann, R. & Richter, G. Computational fluid dynamic simulations: effects of non-newtonian blood behaviour in individual aortic aneurysms
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    2007 Proceedings SURGETICA 
    Hazer, D., Schmidt, E., Unterhinninghofen, R., Richter, G.M. & Dillmann, R. Automatic Generation of Individual Finite-Element Models for Computational Fluid Dynamics and Computational Structure Mechanics Simulations in the Arteries
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    2008
    Vol. 1148Proc. International Conference on Computational Methods in Sciences and Engineering (ICCMSE), pp. 133-136 
    Hazer, D., Unterhinninghofen, R., Kostrzewa, M., Kauczor, H., Dillmann, R. & Richter, G. A Workflow for Computational Fluid Dynamics Simulations using Patient-Specific Aortic Models
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    2006 Proceedings of the 24. CADFEM Users´Meeting, Fellbach, Germany 
    Hazer, D., Unterhinninghofen, R., Kostrzewa, M., Kauczor, H., Dillmann, R. & Richter, G. Wall Shear Stress simulations in a CT based human Abdominal Aortic Model
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    2006 Proc. Computer- und Roboterassistierte Chirurgie (CURAC) 
    Kainmüller, D., Unterhinninghofen, R., Ley, S. & Dillmann, R. Level Set Segmentation of the Heart from 4D Phase Contrast MRI
    [BibTeX]
    2008
    Vol. 6914Proc. SPIE Medical Imaging 
    Katic, D., Castrillon-Oberndorfer, G., Sudra, G., Speidel, S., Eggers, G. & Dillmann, R. Wissensbasierter Ansatz zur kontextbezogenen Erweiterten Realität in der Dentalimplantologie
    [BibTeX]
    2010 Proc. Computer- und Roboterassistierte Chirurgie (CURAC) 
    Katic, D., Christian, T., Castrillon-Oberndorfer, G., Hoffmann, J., G.Eggers, Dillmann, R. & Speidel, S. Calibration of see-through Goggles for a context-aware augmented reality system
    [BibTeX]
    2011 Computer Assisted Radiology and Surgery (CARS) 
    Katic, D., Sudra, G., Speidel, S., Castrillon-Oberndorfer, G., Eggers, G. & Dillmann, R. Knowledge-based Situation Interpretation for Context-aware Augmented Reality in Dental Implant Surgery
    [BibTeX]
    2010 Proc. Medical Imaging and Augmented Reality (MIAR) 
    Katic, D., Sudra, G., Speidel, S., Castrillon-Oberndorfer, G., Eggers, G. & Dillmann, R. Context-aware Augmented Reality for Dental Implant Surgery
    [BibTeX]
    2010 Proc. Computer Assisted Radiology and Surgery (CARS) 
    Katic, D., Wekerle, A., Bodenstedt, S., Kenngott, H., Mueller-Stich, B., Dillmann, R. & Speidel, S. Logic-Based Situation Interpretation with Real-Valued Sensor Data for Laparoscopic Surgery
    [BibTeX]
    2011 MICCAI Workshop on Modeling and Monitoring of Computer Assisted Interventions (M2CAI) 
    Kenngott, H., Mueller-Stich, B., Dillmann, R., Wörn, H., Meinzer, P., Kauczor, H., Speidel, S., Hughes, K. & Büchler, M. SFB TRR 125 Heidelberg/Karlsruhe - Applikationen
    [BibTeX]
    2012 CURAC 
    Kroll, J., D.Fritz, R.Dillmann & M.Scheuering 4D-interpolation-scheme of the left ventricular wall motion
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    2006 Proc. Computer- und Roboterassistierte Chirurgie (CURAC) 
    Mueller-Stich, B., Dillmann, R., Wörn, H., Meinzer, P., Kauczor, H., Kenngott, H., Speidel, S., Hughes, K. & Büchler, M. SFB Cognition Guided Surgery - SFB TRR 125 Heidelberg/Karlsruhe
    [BibTeX]
    2012 CURAC 
    Pfau, B., Suwelack, S., Dillmann, R. & Heuveline, V. Soft tissue simulation using discontinuous galerkin FEM
    [BibTeX]
    2010 RICAM Workshop on Discontinuous Galerkin Methods 
    an R. Marmulla, G.S., Salb, T., Gockel, T., Eggers, G., Giesler, B., Ghanai, S., Dillmann, R. & Hassfeld, S. Technical experience from clinical studies with INPRES and a concept for a miniature augmented reality system
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    2005 Proc. Medicine Meets Virtual Reality (MMVR) 
    Roehl, S., Speidel, S., Sudra, G., Müller-Stich, B.P., Gutt, C. & Dillmann, R. Dynamic 3D-Reconstruction of Endoscopic Image Sequences
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    2008 Proc. Computer- und Roboterassistierte Chirurgie (CURAC) 
    Röhl, S., Speidel, S., Sudra, G., Gehrig, T., Müller-Stich, B.P., Gutt, C. & Dillmann, R. A surface model for intraoperative soft tissue registration
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    2009 Proc. Computer Assisted Radiology and Surgery (CARS)
    Vol. 4 
    Röhl, S., Bodenstedt, S., Küderle, C., Suwelack, S., Kenngott, H., Müller-Stich, B., Dillmann, R. & Speidel, S. Fusion of intraoperative force sensoring, surface reconstruction and biomechanical modeling
    [BibTeX]
    2012 Proc. SPIE Medical Imaging 
    Röhl, S., Bodenstedt, S., Suwelack, S., Kenngott, H., Mueller-Stich, B., Dillmann, R. & Speidel, S. Dense GPU-enhanced surface reconstruction from stereo endoscopic images for intraoperative registration
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    2012 Medical Physics
    Vol. 39(3), pp. 1632-45 
    Röhl, S., Bodenstedt, S., Suwelack, S., Kenngott, H., Müller-Stich, B., Dillmann, R. & Speidel, S. Real-time surface reconstruction from stereo endoscopic images for intraoperative registration
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    2011 Proc. SPIE Medical Imaging 
    Röhl, S., Müller-Stich, B., Dillmann, R. & Speidel, S. AR-enhanced registration of intra- and preoperative models in a laparoscopic setting
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    2012 MICCAI 2012 Workshop on Augmented Environments in Computer-Assisted Interventions (AE-CAI) 
    Röhl, S., Speidel, S., Gonzalez-Aguirre, D., Suwelack, S., Kenngott, H., Asfour, T., B., M.-S. & Dillmann, R. From Stereo Image Sequences to Smooth and Robust Surface Models using Temporal Information and Bilateral Postprocessing
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    2011 IEEE International conference on Robotics and Biomimetics 
    S.Röhl, Speidel, S., Suwelack, S., Kenngott, H., Mueller-Stich, B. & Dillmann, R. Modellbasierte intraoperative Registrierung von Weichgewebe für ein chirurgisches Assistenzsystem
    [BibTeX]
    2010 CURAC 
    Salb, T., Brief, J., Burgert, O., Gockel, T., Hassfeld, S., Mühling, J. & Dillmann, R. Intraoperative Augmented Reality for Craniofacial Surgery: The INPRES System
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    2002 Proceedings Surgetica 
    Salb, T., Brief, J., Burgert, O., Gockel, T., Hassfeld, S., Mühling, J. & Dillmann, R. INPRES - INtraoperative PRESentation of Surgical Planning and Simulation Results
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    2001 Proceedings CARS 
    Salb, T., Brief, J., Burgert, O., Hassfeld, S. & Dillmann, R. Interactive Simulation of Tooth Cleaning with an Interdental Brush
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    2000 Proceedings MMVR 
    Salb, T., Brief, J., Burgert, O., Hassfeld, S. & Dillmann, R. Intraoperative Presentation of Surgical Planning and Simulation Results using a Stereoscopic See-Through Head-Mounted Display
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    2000 Proceedings SPIE 
    Salb, T., Brief, J., Burgert, O., Haßfeld, S. & Dillmann, R. Haptic Based Risc Potential Mediation for Surgery Simulation
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    1999 Proc. of 1st International Workshop on Haptic Devices in Medical Applications, pp. 85 - 93 
    Salb, T., Brief, J. & Dillmann, R. Brillenbasierte erweiterte Realität für die Mund-Kiefer-Gesichtschirurgie
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    2002 Proceedings BMT 
    Salb, T., Burgert, O., Gockel, T., Brief, J., Hassfeld, S. & Dillmann, R. Risk Reduction in Craniofacial Surgery using Computer-based Modeling and Interaoperative Immersion
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    2002 Proceedings MMVR 
    Salb, T., Burgert, O., Gockel, T., Giesler, B. & Dillmann, R. Comparison of Tracking Techniques for Intraoperative Presentation of Medical Data using a See-Through Head-Mounted Display
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    2001 Proceedings MMVR 
    Salb, T., Weyrich, T. & Dillmann, R. Preoperative planning and trainng simulation for risk reducing surgery
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    1999 Proceedings of International Training and Education Conference  
    Seifert, S., Blassman, F. & Dillmann, R. Simulation of Vessel Deformation for Incisions at the Cervical Spine
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    Seifert, S., Burgert, O. & Dillmann, R. Deformable Modelling of the Cervical Spine for Neurosurgical Navigation
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    2005 Biomechanics Applied to Computer Assisted Surgery, pp. 27-38 
    Seifert, S., Burgert, O. & Dillmann, R. MEDIFRAME - An Extendable Software Framework for Medical Applications
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    2002 Proceedings of SURGETICA, Grenoble, France 
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    Seifert, S. & Dillmann, R. Biomechanical Modeling of the Cervical Spine on the Basis of Tomographic Data
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    Seifert, S. & Dillmann, R. A Cervical Disc Model for Patient Individual Surgical Planning
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    2007 Proc. Computer- und Roboterassistierte Chirurgie (CURAC) 
    Seifert, S., Hahn, M., Spetzger, U., Beth, T. & Dillmann, R. Computer based Planning and Navigation of Neurosurgical Incisions at the Spine
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    2004 Proc. Computer- und Roboterassistierte Chirurgie (CURAC), München, Germany 
    Seifert, S., Hekler, A., Stenzel, R. & Dillmann, R. Patientindividual Geometric Modelling of the Lumbar Spine from CT Data
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    2004 Proc. Computer- und Roboterassistierte Chirurgie (CURAC), München, Germany 
    Seifert, S., Kainmüller, D. & Dillmann, R. Automatic Mesh Generator for Mass-Spring Systems
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    2003 Proc. Computer- und Roboterassistierte Chirurgie (CURAC), Nürnberg, Germany 
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    2003
    Vol. 2Proc. IEEE Engineering in Medicine and Biology (EMBC), pp. 1327-1330 
    Seifert, S., Kussaether, R., Unterhinninghofen, R., Burgert, O. & Dillmann, R. Smooth Cutting in Nonlinear Soft Tissue Model
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    2003 Proc. Computer Assisted Radiology and Surgery (CARS), London, United Kingdom 
    Seifert, S., Küster, S. & Dillmann, R. Comparison of Yeoh, Mooney-Rivlin and St-Venant-Kirchhoff Materials for Passive Modeling of Skeletal Muscles
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    2005 Proc. SURGETICA 
    Seifert, S., Schmelzle, G. & Dillmann, R. Automatic Detection of Connection Points at the Cervical Spine for Ligaments and Muscles
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    2005 Proc. Computer- und Roboterassistierte Chirurgie (CURAC) 
    Seifert, S., Völzow, N. & Dillmann, R. Automatic 3D Laser Scanning for Medical Applications
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    2004 Proc. Computer- und Roboterassistierte Chirurgie (CURAC), München, Germany 
    Seifert, S., Wittner, T. & Dillmann, R. Biomechanische Modellierung der Halswirbelsäule auf Basis tomographischer Bilddaten
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    2006 Proceedings of the 24. CADFEM Users´Meeting, Fellbach, Germany 
    Seifert, S., Wittner, T. & Dillmann, R. Towards a Library for Soft Tissue Modeling
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    2006 Proc. Computer Assisted Radiology and Surgery (CARS) 
    Seifert, S., Wittner, T. & Dillmann, R. Soft Tissue Framework on the Basis of Nonlinear FEM
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    2005 Proc. CADFEM 
    Seifert, S., Wächter, I. & Dillmann, R. Segmentation of Intervertebral Discs, Trachea and Spinal Cord from MRI Images
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    2006 Proc. Computer Assisted Radiology and Surgery (CARS) 
    Seifert, S., Wächter, I. & Dillmann, R. Reconstruction of cervical soft tissue structures from tomographic data
    [BibTeX]
    2006 Proc. Computer- und Roboterassistierte Chirurgie (CURAC) 
    Seifert, S., Wächter, I., Schmelzle, G. & Dillmann, R. A Knowledge-Based Approach to Soft Tissue Reconstruction of the Cervical Spine
    [BibTeX]
    2009 IEEE Transactions on Medical Imaging
    Vol. 28(4), pp. 494-507 
    Seifert, S., Wächter, I., Wittner, T., Dillmann, R. & Spetzger, U. A patient individual finite element model of the spine
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    2005 Proc. Computer Assisted Radiology and Surgery (CARS) 
    Speidel, S., Benzko, J., Krappe, S., Sudra, G., Azad, P., Müller-Stich, B.P., Gutt, C. & Dillmann, R. Automatic classification of minimally invasive instruments based on endoscopic image sequences
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    2009 Proc. SPIE Medical Imaging 
    Speidel, S., Delles, M., Gutt, C. & Dillmann, R. Tracking of Instruments in Minimally Invasive Surgery for Surgical Skill Analysis
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    2006 Medical Imaging and Augmented Reality (MIAR) 
    Speidel, S., Kleinert, M., Sudra, G., Schalck, S., Müller-Stich, B.P., Gutt, C. & Dillmann, R. 3D-Reconstruction from endoscopic image sequences for intraoperative assistance
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    2008 Proc. Computer Assisted Radiology and Surgery (CARS) 
    Speidel, S., Roehl, S., Suwelack, S., Dillmann, R., Kenngott, H. & Mueller-Stich, B. Intraoperative surface reconstruction and biomechanical modeling for soft tissue registration
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    2011 Proc. Joint Workshop on New Technologies for Computer/Robot Assisted Surgery  
    Speidel, S., Sudra, G., Schalck, S., Müller-Stich, B.P., Gutt, C. & Dillmann, R. Automatic Image-Based Analysis for Context-Aware Assistance in Minimally Invasive Surgery
    [BibTeX]
    2007 Proceedings SURGETICA 
    Speidel, S., Sudra, G., Senemaud, J., Drentschew, M., Müller-Stich, B.P., Gutt, C. & Dillmann, R. Recognition of Risk Situations Based on Endoscopic Instrument Tracking and Knowledge Based Situation Modeling
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    2008 Proc. SPIE Medical Imaging 
    Speidel, S., Zens, M., Sudra, G., Welke, K., Müller-Stich, B.P., Gutt, C. & Dillman, R. Bildbasierte Erkennung chirurgischer Materialien für ein situationsbezogenes Assistenzsystem in der minimal-invasiven Chirurgie
    [BibTeX]
    2007 Proc. Computer- und Roboterassistierte Chirurgie (CURAC) 
    Speidel, S., Zentek, T., Sudra, G., Müller-Stich, B.P., Gutt, C. & Dillmann, R. Recognition of Surgical Skills using Hidden Markov Models
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    2009 Proc. SPIE Medical Imaging 
    Sudra, G., Becker, A., Braun, M., Speidel, S., Müller-Stich, B.P. & Dillmann, R. Estimating Similarity of Surgical Situations with Case-Retrieval-Nets
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    2009 Proc. Medicine Meets Virtual Reality (MMVR) 
    Sudra, G., Becker, A., Speidel, S., al Makadsi, G., Müller-Stich, B.P. & Dillmann, R. Modellierung des Operationsablaufs für ein situationsbezogenes Assistenzsystem der Erweiterten Realität
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    2007 Proc. Computer- und Roboterassistierte Chirurgie (CURAC) 
    Sudra, G., Eggers, G., Pfeiffer, S., Schalck, S., Giesler, B., Marmulla, R. & Dillmann, R. Augmented Reality with Fibre Optics
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    2006 Proc. Medicine Meets Virtual Reality (MMVR) 
    Sudra, G., Eggers, G., Pfeiffer, S., Ulbrich, S., Marmulla, R., Muehling, J. & Dillmann, R. Exploring virtual objects with a see-through based augmented reality system in craniofacial surgery
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    2006 Proc. Computer- und Roboterassistierte Chirurgie (CURAC) 
    Sudra, G., Eggers, G., Weber, D., Giesler, B. & Dillmann, R. A miniaturized augmented reality technique based on fibre optics
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    2005 Proc. Biomedizinische Technik (BMT) 
    Sudra, G., Katic, D., Braun, M., Speidel, S., Castrillon-Oberndorfer, G., Eggers, G., Marmulla, R. & Dillmann, R. Wissensbasierte Modellbildung und Situationsinterpretation für eine kontextbezogene Chirurgieassistenz
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    2009 Proc. Gesellschaft für Informatik Tagung 
    Sudra, G., Marmulla, R., Salb, T., Ghanai, S., Eggers, G., Giesler, B., Hassfeld, S., Mühling, J. & Dillmann, R. First clinical tests with the augmented reality system INPRES
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    2005 Proc. Medicine Meets Virtual Reality (MMVR) 
    Sudra, G., Speidel, S., Fritz, D., Müller-Stich, B.P., Gutt, C. & Dillmann, R. MEDIASSIST: MEDIcal ASSistance for Intraoperative Skill Transfer in Minimally Invasive Surgery Using Augmented Reality
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    2007 Proceedings SPIE Medical Imaging 
    Sudra, G., Speidel, S., Müller-Stich, B., Becker, A., Ott, M. & Dillmann, R. Situation modelling and situation recognition for a context-aware augmented reality system
    [BibTeX]
    2007 Proc. Computer Assisted Radiology and Surgery (CARS) 
    Sudra, G., Speidel, S., Platzek, S., Müller-Stich, B.P. & Dillmann, R. Augmented Reality Assistance for Realization of Incision Planning and Model-based Analysis of the Modified Surface Model
    [BibTeX]
    2008 Proc. Medicine Meets Virtual Reality (MMVR) 
    Suwelack, S., Heitz, E., Unterhinninghofen, R. & Dillmann, R. Adaptive GPU Ray Casting Based on Spectral Analysis
    [BibTeX]
    2010 Proc. Medical Imaging and Augmented Reality (MIAR), pp. 169-178 
    Suwelack, S., Katic, D., Wagner, S., Spengler, P., Bodenstedt, S., Röhl, S., Dillmann, R. & Speidel, S. Lightweight distributed computing for intraoperative real-time image guidance
    [BibTeX]
    2012 Proc. SPIE Medical Imaging 
    Suwelack, S., Maier, S., Unterhinninghofen, R. & Dillmann, R. Web-Based Volume Rendering
    [BibTeX]
    2011 Proc. Medicine Meets Virtual Reality (MMVR) 
    Suwelack, S., Roehl, S., Dillmann, R., Wekerle, A., Kenngott, H., Müller-Stich, B., Alt, C. & Speidel, S. Quadratic Corotated Finite Elements for Real-Time Soft Tissue Registration
    [BibTeX]
    2011 MICCAI workshop: Computational Biomechanics for Medicine 
    Suwelack, S., Speidel, S., Roehl, S. & Dillmann, R. Towards finite element-based soft tissue modelling for real-time image registration
    [BibTeX]
    2010 Proc. Computer Assisted Radiology and Surgery (CARS) 
    Suwelack, S., Talbot, H., Röhl, S., Dillmann, R. & Speidel, S. A biomechanical liver model for intraoperative soft tissue registration
    [BibTeX]
    2011 Proc. SPIE Medical Imaging 
    Unterhinninghofen, R., Albers, J., Hosch, W. & und R. Dillmann, C.V. Flow Quantification from time-resolved MRI vector fields
    [BibTeX]
    2005 Proc. Computer Assisted Radiology and Surgery (CARS) 
    Unterhinninghofen, R., Ley, S., Frydrychowicz, A. & Markl, M. MRT-basierte tridirektionale Flussbildgebung
    [BibTeX]
    2007 Der Radiologe
    Vol. 47(11), pp. 1012-1020 
    Unterhinninghofen, R., Ley, S., Ley-Zaporozhan, J., von H. Tengg-Kobligk, Bock, M., Kauczor, H.-U., Szabó, G. & Dillmann, R. Concepts for Visualization of Multidirectional Phase-contrast MRI of the Heart and Large Thoracic Vessels
    [BibTeX]
    2008 Academic Radiology
    Vol. 15(3), pp. 361-369 
    Unterhinninghofen, R., Ley, S., Ley-Zaporozhan, J., Szabó, G., Kauczor, H.-U. & Dillmann, R. Segmentation of large vessels based on PC-MRI velocity vector fields
    [BibTeX]
    2007 Proceedings SURGETICA 
    Unterhinninghofen, R., Ley, S., Zaporozhan, J., Szabó, G. & Dillmann, Rü. A versatile tool for flow analysis in 3D-phase-contrast magnetic resonance imaging
    [BibTeX]
    2006 International Journal on CARS
    Vol. Suppl. 1, pp. 111-113 
    Unterhinninghofen, R., Stehle, T., Albers, J., Hosch, W., Vahl, C. & Dillmann, R. Analysis of left-ventricular pathological flow via phase-contrast magnetic resonance imaging
    [BibTeX]
    2004 Proc.Computer Assisted Radiology and Surgery (CARS), Chicago, USA 
    Unterhinninghofen, R., und W. Hosch, J.A. & und R. Dillmann, C.V. Multidimensional interactive colour-coding in velocity encoded magnetic resonance images of mitral insufficiency
    [BibTeX]
    2005 Proc. SURGETICA 
    Weingärtner, T., Haßfeld, S. & Dillmann, R. A 3D Simulation of the Mastication System for Maxillofacial Surgery
    [BibTeX]
    1997 In Proc. Of the Medtec 
    Weingärtner, T., Haßfeld, S. & Dillmann, R. A Kinematic Model of the Temoromandibular Joint for Maxillofacial Surgery
    [BibTeX]
    1997 In Proc. Of the MRCAS'97 
    Wekerle, A., Katic, D., Kenngott, H., S.Speidel & Mueller-Stich, B. Konstruktion einer Wissensbasis für die minimal invasive Pankreaschirurgie
    [BibTeX]
    2011 CURAC 
    Wächter, I., Seifert, S. & Dillmann, R. Automatic Segmentation of Cervical Soft Tissue from MR Images
    [BibTeX]
    2005 Proc. SURGETICA