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| Stable release version 3.0 is a major release containing many new feature over the prior release version 2.2. Data processed using v2.2 or earlier is not compatible with this new release. | Stable release version 3.0 is a major release containing many new feature over the prior stable release (version 2.2). Data processed using stable v2.2 or earlier is not compatible with this new release. |
[wiki:FreeSurferWiki top]
FreeSurfer Release Notes
These Release Notes cover what's new in a release, and known issues.
Download and installation instructions [wiki:DownloadAndInstall are found here].
Bug reporting instructions [wiki:BugReporting are found here].
Stable v3.0
Stable release version 3.0 is a major release containing many new feature over the prior stable release (version 2.2). Data processed using stable v2.2 or earlier is not compatible with this new release.
What's New
Sub-cortical segmentation - Each MRI volume voxel is assigned one of 37 possible neuroanatomical labels, including left and and right caudate, putamen, pallidum, thalamus, lateral ventricles, hippocampus, and amygdala. The labeling allows for volumetric measurement of these structures. The segmentation information also improves the ability to create a filled white-matter volume.
Automated filling of ventricles and basal ganglia - Improves the ability to create a filled white-matter volume (which is used in the surface creation process).
Improved skull stripping/cutting plane definition - The needs to conduct manual edits to account for skull-stripping and cutting plane problems is reduced.
New cortical parcellation (Desikan-Killiany) - A neuroanatomical label is assigned to each location on the cortical surface model based on probabilistic information estimated from a manually labeled training set.
Surface-based GLM analysis - Utilities for conducting group analysis studies are now available.
Multiple comparison correction - Utilities for conducting multi-variate linear regression (FDR, permutation and Monte Carlo) are available.
Online tutorial of the Freesurfer work-flow - This release is compatible with the on-line tutorial.
Simplified distribution download and installation - The critical library and toolkit dependencies (MNI, FSL, GSL, Tcl/Tk/Tix/BLT, and Qt) are included to ease installation. These third-party open-sourced packages can be removed if they are already installed on the target system (although full Freesurfer functionality is no longer assured). For Mac OS X, a GUI installation package is provided.
Support for 64-bit Linux and Mac OS X platforms - 64-bit binaries, allowing memory access beyond 4GB, are available.