Patch-based segmentation using expert priors: Application to hippocampus and ventricle segmentation

►The Nonlocal means estimator can be used to accurately segment anatomical brain structures such as hippocampus and lateral ventricles. ►Contrary to template warping methods working at the structure level, the proposed method handles a finer scale by using patches. ►Nonlocal patch-based segmentation does not require nonlinear registrations while providing state-of-the-art results.