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Proceedings Paper

Toward frameless stereotaxy: anatomical-vascular correlation and registration
Author(s): Christopher J. Henri; A. Cukiert; D. Louis Collins; A. Olivier; Terence M. Peters
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Paper Abstract

We present a method to correlate and register a projection angiogram with volume rendered tomographic data from the same patient. Previously, we have described how this may be accomplished using a stereotactic frame to handle the required coordinate transformations. Here we examine the efficacy of employing anatomically based landmarks as opposed to external fiducials to achieve the same results. The experiments required a neurosurgeon to identify several homologous points in a DSA image and a MRI volume which were subsequently used to compute the coordinate transformations governing the matching procedure. Correlation accuracy was assessed by comparing these results to those employing fiducial markers on a stereotactic frame, and by examining how different levels of noise in the positions of the homologous points affect the resulting coordinate transformations. Further simulations suggest that this method has potential to be used in planning stereotactic procedures without the use of a frame.

Paper Details

Date Published: 22 September 1992
PDF: 11 pages
Proc. SPIE 1808, Visualization in Biomedical Computing '92, (22 September 1992); doi: 10.1117/12.131079
Show Author Affiliations
Christopher J. Henri, McGill Univ. (Canada)
A. Cukiert, McGill Univ. (Canada)
D. Louis Collins, McGill Univ. (Canada)
A. Olivier, McGill Univ. (Canada)
Terence M. Peters, McGill Univ. (Canada)


Published in SPIE Proceedings Vol. 1808:
Visualization in Biomedical Computing '92

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