A Bayesian model of shape and appearance for subcortical brain segmentation
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Cites methods from "A Bayesian model of shape and appea..."
...In this context, FIRST was configured to automatically segment the nucleus accumbens, caudate, globus pallidus, putamen and thalamus (all bilaterally)....
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...Although FIRST provides mask images of each segmented structure, these masks over-estimate the volumetric extent of the relevant structure, as a voxel must only overlap with a small fraction of the mesh to be included in the mask....
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...We employed the FMRIB Integrated Registration and Segmentation Tool (FIRST) (Patenaude et al., 2011), which calculates closed triangular meshes to estimate the positions and shapes of various sub-cortical structures....
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References
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"A Bayesian model of shape and appea..." refers methods in this paper
...In (A) the figure shows the colour-coding of the surface and vectors reflecting the uncorrected F-statistics associated with the change, while in (B) it shows the p-values, corrected for multiple-comparisons using False Discovery Rate (Benjamini and Hochberg, 1995; Genovese et al., 2002)....
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"A Bayesian model of shape and appea..." refers methods in this paper
...The desired cross-subject vertex correspondence is optimised by within-surface motion constraints and minimal smoothing within the 3D deformable model (Kass et al., 1988; Lobregt and Viergever, 1995; Smith, 2002)....
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"A Bayesian model of shape and appea..." refers methods in this paper
...This regularisation displacement is identical to that used by BET (Smith, 2002), except that its weighting is initially set to zero and adaptively updated, in order to try to retain better vertex correspondence across subjects....
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...The desired cross-subject vertex correspondence is optimised by within-surface motion constraints and minimal smoothing within the 3D deformable model (Kass et al., 1988; Lobregt and Viergever, 1995; Smith, 2002)....
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