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Image-Guided Surgery Applications

Image-Guided Surgery Applications. Julien Jomier The University of North Carolina at Chapel Hill. Outline. TIPS Procedure CASILab NeuroSurgery Application BrainLab Liver Transplant Planning RF Liver Tumor Ablation CADDLab. TIPS Procedure.

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Image-Guided Surgery Applications

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  1. Image-Guided SurgeryApplications Julien Jomier The University of North Carolina at Chapel Hill

  2. Outline TIPS ProcedureCASILab NeuroSurgery Application BrainLab Liver Transplant Planning RF Liver Tumor AblationCADDLab

  3. TIPS Procedure • Transjugular Intrahepatic Portosystemic Shunt • CASILab @ UNC (Dr. Bullitt)

  4. TIPS procedure • Biplane Fluoroscopic Images • 3D/2D Model-to-Image Registration • Real-time tracking

  5. TIPS : Registration FluoroImages Balloon Tracking Model-to-Image Registration 3DDisplay Needle Tracking 3D VascularModel

  6. NeuroSurgery • BrainLab • VectorVision/VVLink • VTK / CMake • Brain/Spine surgery • Intra-Operative Ultrasound • Optical Tracker (NDI)

  7. NeuroSurgery • VVCranial • MR/Patient registration:- Surface matching of the skull • Surgical Navigation • Tool tracking • Head tracking

  8. MR/US Fusion • Manual alignment of tumor margins • Add automatic non-rigid registration • Model-to-Image registration

  9. Liver Transplant Planning • Define optimal cutting path preoperatively. • Open-Surgery • Bring the path in the OR • Deformable Registration • Ultrasound Annotation

  10. Liver Transplant Planning

  11. Liver Transplant Planning

  12. RF Liver Tumor Ablation • 40-50% of all lesions not seen using ultrasound. • Options:- Open Surgery- CT/MR guided RFA- wait until lesion enlarges • Ideal: Percutaneous treatment using US

  13. RF Liver Tumor Ablation

  14. RF Liver Tumor Ablation • US Probe tracking via Ascension Flock of Birds • Needle segmentation from US • 3 Displays:- 3D- Needle pointof view- Slice based

  15. RFA Results • US/MR model-to-image affine registration • About 2 seconds • Accuracy:- < 2mm translation- < 0.06rad rotation

  16. 3D US Reconstruction • Reconstruct 3D Ultrasound volume from 2D tracked images • Breathing/Heart beating • Calibration needed

  17. y z O x 3D US Calibration y Ttracker Tracker -x TTrackerToProbe Tmodel -z US Probe TProbeToImage US Image

  18. US Reconstruction Results

  19. Acknowledgments • Dr. Sue Weeks • Dr. Friedman • Dr. Elizabeth Bullitt • Stephen Aylward • Amael Delaunoy

  20. Tools • Open Source Toolkits • ITK/VTK • IGSTK • CMake • SOViewers • FLTK/Qt

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