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Related Experiment Videos

Template-based registration for image-guided maxillofacial surgery.

Georg Eggers1, Joachim Mühling, Rüdiger Marmulla

  • 1Department of Oral and Cranio-Maxillofacial Surgery, Heidelberg University Hospital, Heidelberg, Germany. georg.eggers@med.uni-heidelberg.de

Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons
|August 27, 2005
PubMed
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Intraoral fiducial markers on a maxillary template offer a less invasive approach for image-guided surgery. This method is accurate for facial and orbital regions but less so for the calvarium.

Area of Science:

  • Medical Imaging
  • Surgical Navigation
  • Biomedical Engineering

Background:

  • Fiducial marker registration using bone screws is standard for head image-guided surgery.
  • Intraoral fiducial markers on a maxillary template offer a less invasive alternative for intraoral procedures.

Purpose of the Study:

  • To evaluate the accuracy of intraoral fiducial markers on a maxillary template for extraoral image-guided surgery.
  • To determine if this less invasive method is suitable for broader applications in head and neck surgery.

Main Methods:

  • 243 configurations of fiducial markers on a maxillary template were tested.
  • Accuracy was assessed by identifying artificial skull targets in surgically relevant locations.

Main Results:

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  • Targeting accuracy was sufficient for image-guided surgery of the maxilla, midface, orbit, and pterygopalatine fossa.
  • Average target registration error exceeded 1.5 mm in the calvarium regions, with some errors over 3 mm.

Conclusions:

  • Maxillary template-based fiducial marker registration is a safe, non-invasive option for image-guided surgery.
  • It is suitable for the orbit, face, maxilla, and pterygopalatine fossa, but less accurate for the calvarium.