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Registration of Multiple CT Images Using Principal Axis-based Rigid Body Transformation  

유선국 (연세대학 의학공학교실)
김용욱 (연세대학 성형외과학교실)
이혜연 (연세대학 해부학교실)
김희중 (연세대학 진단방사선학교실)
김기덕 (연세대학 치과대학)
김남현 (연세대학 의학공학교실)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers D / v.52, no.8, 2003 , pp. 500-505 More about this Journal
Abstract
In this paper, the method to register multiple sets of skull CT images to absolute coordinate system is proposed. Contrary to correspondence paired mapping of previous techniques, four anatomical landmark points, three coplanar points and one non-coplanar point, compose three principal axes simple and unique for efficient registration by means of rigid body transformation. Throughout the numerical simulation with added random noises, the error performances in terms of different rotation and rounding-off of landmark points, and incorrect localization of anatomical landmark and target points are quantitatively analyzed to generalize the proposed technique. Experiments using real skull CT images demonstrate the feasibility for an efficient use in clinical practice.
Keywords
multiple CT images; registration; principal axis; rigid body transformation;
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