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Related Experiment Videos

C-arm-based three-dimensional navigation: a preliminary feasibility study.

Ekkehard Euler1, Sandro Heining, Christian Riquarts

  • 1Surgical Clinic and Polyclinic, Klinikum of the University of Munich-Innenstadt, Munich, Germany. euler@ch-i.med.uni-muenchen.de

Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery
|January 8, 2004
PubMed
Summary

Three-dimensional navigation using the Siremobil Iso-C3D C-arm is feasible and accurate for spinal surgery. This technique, comparable to CT-based navigation, aids in precise pedicle screw placement.

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Area of Science:

  • Medical Imaging
  • Surgical Navigation
  • Orthopedic Surgery

Background:

  • Intraoperative three-dimensional (3D) datasets can now be acquired in near-real time using the Siremobil Iso-C3D C-arm.
  • Preliminary studies suggest advantages for joint and spinal surgery.
  • 3D navigation appears feasible using DICOM datasets from the Siremobil Iso-C3D in navigation devices.

Purpose of the Study:

  • To investigate the feasibility and accuracy of 3D navigation using the Siremobil Iso-C3D C-arm system.
  • To evaluate the potential of this technique for intraoperative guidance in orthopedic procedures.

Main Methods:

  • Acquired pre-interventional 3D datasets using the Siremobil Iso-C3D C-arm.
  • Transferred DICOM data to a medivision navigation system with a spine module.

Related Experiment Videos

  • Implanted 20 pedicle screws in artificial and cadaveric vertebrae using real-time navigation after fiducial registration.
  • Controlled implant position post-interventionally using Iso-C3D and CT scans.

    • Main Results:

    • Fiducial marker implantation and registration require a specific protocol for accurate identification and orientation.
    • Achieved an accuracy within 2 mm for the navigation procedure.
    • Post-intervention imaging showed 10 of 12 pedicle screws correctly placed in cadaveric vertebrae, with two in marginal intraosseous positions.

    Conclusions:

    • 3D navigation with Siremobil Iso-C3D datasets is feasible and accurate, comparable to CT-based navigation for clinical interventions.
    • Fiducial marker-based registration enables navigation across different bones within the same dataset, eliminating the need for additional 3D scans.
    • This method serves as a valuable adjunct to registration-free Iso-C3D-based navigation, particularly when the navigation system utilizes a single dynamic reference base (DRB).