Fig. 3.
The 3D models are based on the segmentations generated by our new method through 20 iterations. The method is initialized with the mean shape of each structure. The very noisy initial segmentation is an indication of the disagreement between the mean and the patient specific shape. As the algorithm proceeds the shape of the caudate and thalamus adjusts to the patient specific situation. After about 20 iterations the algorithm converges to a smoother segmentation.