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Cortical Parcellation

The FreeSurfer utilities ["mris_ca_train"] and ["mris_ca_label"] together implement a technique for automatically assigning a neuroanatomical label to each location on a cortical surface model based on probabilistic information estimated from a manually labeled training set (made using FreeSurfer). This procedure incorporates both geometric information derived from the cortical model, and neuroanatomical convention, as found in the training set. The result is a complete labeling of cortical sulci and gyri.

attachment:annot-sm.jpg

Background

[https://surfer.nmr.mgh.harvard.edu/ftp/articles/fischl04-parcellation.pdf Automatically Parcellating the Human Cerebral Cortex], Fischl et al., (2004). Cerebral Cortex, 14:11-22.
[https://surfer.nmr.mgh.harvard.edu/ftp/articles/desikan06-parcellation.pdf An automated labeling system for subdividing the human cerebral cortex on MRI scans into gyral based regions of interest], Desikan et al., (2006). NeuroImage, in press.

Utilities

["mris_sample_parc"] - samples a volumetric parcellation onto a surface
["mris_ca_train"] - creates the reference atlas
["mris_ca_label"] - parcellates a cortical surface based on the reference atlas

Atlas

<discuss default atlas, discuss creation of own atlas>

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* <add link to R. Desikan paper>	* [https://surfer.nmr.mgh.harvard.edu/ftp/articles/desikan06-parcellation.pdf An automated labeling system for subdividing the human cerebral cortex on MRI scans into gyral based regions of interest], Desikan et al., (2006). NeuroImage, in press.