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22 September 1992 Toward frameless stereotaxy: anatomical-vascular correlation and registration
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Proceedings Volume 1808, Visualization in Biomedical Computing '92; (1992)
Event: Visualization in Biomedical Computing, 1992, Chapel Hill, NC, United States
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.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christopher J. Henri, A. Cukiert, D. Louis Collins, A. Olivier, and Terence M. Peters "Toward frameless stereotaxy: anatomical-vascular correlation and registration", Proc. SPIE 1808, Visualization in Biomedical Computing '92, (22 September 1992);

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