Fast Volume Rendering Methods for Voxel-based 2D/3D Registration -
A Comparative Study
Authors: Roland Göcke, Jürgen Weese, and Heidrun
Schumann
Presented by Roland Göcke at the International Workshop
on Biomedical Image Registration '99, Bled, Slovenia, 30-31 August
1999
Abstract
Voxel-based 2D/3D registration enables the use of preoperative 3D CT scans
during X-ray fluoroscopy guided interventions for navigation purposes. Both
high accuracy and short computation times are crucial. The registration
method is described. Most time consuming is the computation of a
perspective projection from the 3D data. This paper compares several
volume visualisation methods to compute such a projection quickly and
accurately. The advantages and disadvantages of the methods in regard to
our problem are discussed. Direct volume rendering methods proved to be
particularly suitable and two specific methods were evaluated using a
clinical dataset. Several optimisations of these methods in regard to
2D/3D registration are discussed and the results of two appropriate
optimisations on the test dataset are shown. A method based on a
shear-warp factorisation of the viewing transformation combined with
runlength encoded data showed the best results.
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Last modified: Sat Mar 12 16:39:59 AUS Eastern Daylight Time 2005