Algorithm:Past Featured Articles
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- K. M. Pohl et al. A Bayesian Model for Joint Segmentation and Registration
A statistical model is presented that combines the registration of an atlas with the segmentation of magnetic resonance images. We use an Expectation Maximization-based algorithm to find a solution within the model, which simultaneously estimates image artifacts, anatomical labelmaps, and a structure-dependent hierarchical mapping from the atlas to the image space. The algorithm produces segmentations for brain tissues as well as their substructures. We demonstrate the approach on a set of 22 magnetic resonance images. On this set of images, the new approach performs significantly better than similar methods which sequentially apply registration and segmentation. | |
K. M. Pohl, J. Fisher, W.E.L. Grimson, R. Kikinis, and W.M. Wells, A Bayesian Model for Joint Segmentation and Registration. NeuroImage, 31(1):228-239, 2006. |