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Optimal placement of a deep brain stimulator (DBS) is an iterative procedure. A target is chosen preoperatively based on anatomical landmarks identified on MR images. This point is used as an initial position that is refined intraoperatively using both micro-electrode recordings and macrostimulation. Because the length of the procedure increases with the time it takes to adjust the DBS to its final...
In this paper, we evaluate the accuracy and robustness of intensity-based 2D-3D registration for six image similarity measures using clinical gold-standard spine image data from four patients. The gold-standard transformations are obtained using four bone-implanted fiducial markers. The three best similarity measures are mutual information, cross correlation, and gradient correlation. The mean target...
The paper discusses rigid registration of a 3D volume to 2D projections based on Mutual-Information similarity measures. The experiments we conducted are similar to those of Zoellei. However, in order to obtain a stopping criterion we use the Resilient Backpropagation as optimizer. Performing the registration on artificial images we obtain a speedup of approx. a factor of 10. We applied the matching...
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