Implementation of an oblique sectioning visualization tool for "line-of-sight" stereotactic neurosurgical navigation using the AVW toolkit

Lisa M. Bates, Dennis P. Hanson, Bruce A. Kall, Fredric B. Meyer, Richard A. Robb

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations


An important clinical application of biomedical imaging and visualization techniques is provision of image guided neurosurgical planning and navigation techniques using interactive computer display systems in the operating room. Current systems provide interactive display of orthogonal images and 3D surface or volume renderings integrated with and guided by the location of a surgical probe. However, structures in the "line-of-sight" path which lead to the surgical target cannot be directly visualized, presenting difficulty in obtaining full understanding of the 3D volumetric anatomic relationships necessary for effective neurosurgical navigation below the cortical surface. Complex vascular relationships and histologic boundaries like those found in artereovenous malformations (AVM's) also contribute to the difficulty in determining optimal approaches prior to actual surgical intervention. These difficulties demonstrate the need for interactive oblique imaging methods to provide "line-of-sight" visualization. Capabilities for "line-of-sight" interactive oblique sectioning are present in several current neurosurgical navigation systems. However, our implementation is novel, in that it utilizes a completely independent software toolkit, AVW (A Visualization Workshop) developed at the Mayo Biomedical Imaging Resource, integrated with a current neurosurgical navigation system, the COMPASS stereotactic system at Mayo Foundation. The toolkit is a comprehensive, C-callable imaging toolkit containing over 500 optimized imaging functions and structures. The powerful functionality and versatility of the AVW imaging toolkit provided facile integration and implementation of desired interactive oblique sectioning using a finite set of functions. The implementation of the AVW-based code resulted in higher-level functions for complete "line-of-sight" visualization.

Original languageEnglish (US)
Pages (from-to)219-227
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1998
EventMedical Imaging 1998: Image Display - San Diego, CA, United States
Duration: Feb 22 1998Feb 24 1998


  • AVW
  • Line of sight
  • Navigation
  • Oblique
  • Stereotactic
  • Visualization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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