Steps Toward a Stereo-Camera-Guided Biomechanical Model for Brain Shift Compensation

  • Oskar Škrinjar
  • Colin Studholme
  • Arya Nabavi
  • James Duncan
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2082)

Abstract

Surgical navigation systems provide the surgeon with a display of preoperative and intraoperative data in the same coordinate system. However, the systems currently in use in neurosurgery are subject to inaccuracy caused by intraoperative brain movement (brain shift) since they typically assume that the intracranial structures are rigid. Experiments show brain shift of up to one centimeter, making it the dominant error in the system. We propose a system that compensates for this error. It is based on a continuum 3D biomechanical deformable brain model guided by intraoperative data. The model takes into account neuro-anatomical constraints and is able to correspondingly deform all preoperatively acquired data. The system was tested on two sets of intraoperative MR scans, and an initial validation indicated that our approach reduced the error caused by brain shift.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Oskar Škrinjar
    • 1
  • Colin Studholme
    • 2
  • Arya Nabavi
    • 3
  • James Duncan
    • 1
    • 2
  1. 1.Department of Electrical EngineeringYale UniversityNew HavenUSA
  2. 2.Department of Diagnostic RadiologyYale UniversityNew HavenUSA
  3. 3.Surgical Planning Laboratory, Brigham and Women’s HospitalHarvard Medical SchoolBostonUSA

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