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File:FSL-GUIs.png

The FMRIB Software Library (FSL) is a software library containing image analysis and statistical tools for functional, structural and diffusion MRI brain imaging data.

FSL is available as both precompiled binaries and source code for Apple and PC (Linux and Windows) computers. It is freely available for non-commercial use.


FSL FunctionalityEdit

        Functional MRI
FEATModel-based FMRI analysis with straightforward but powerful GUI: data preprocessing (including slice timing correction, MCFLIRT motion correction and PRELUDE+FUGUE EPI unwarping); FILM GLM timeseries analysis with prewhitening; registration to structural and/or standard space images; and fully generalised mixed-effects group analysis using advanced Bayesian techniques.
MELODICModel-free FMRI analysis using Probabilistic Independent Component Analysis (PICA). MELODIC automatically estimates the number of interesting noise and signal sources in the data and because of the associated "noise model", is able to assign significances ("p-values") to the output spatial maps.
FLOBSGeneration of optimal HRF basis functions and Bayesian activation estimation.
SMMSpatial mixture modelling - alternative hypothesis testing using histogram mixture modelling with spatial regularisation of the voxel classification into activation and non-activation.
        Structural MRI
BET / BET2Brain Extraction Tool - segments brain from non-brain in structural and functional data, and models skull and scalp surfaces.
SUSANNonlinear noise reduction.
FASTFMRIB's Automated Segmentation Tool - brain segmentation (into different tissue types) and bias field correction.
FLIRTFMRIB's Linear Image Registration Tool - linear inter- and intra-modal registration.
FUGUEUnwarps geometric distortion in EPI images using B0 field maps.
SIENAStructural brain change analysis, for estimating brain atrophy.
        Diffusion MRI
FDTFMRIB's Diffusion Toolbox - tools for low-level diffusion parameter reconstruction and probabilistic tractography.
TBSSTract-Based Spatial Statistics (part of FMRIB's Diffusion Toolbox) - voxelwise analysis of multi-subject diffusion data.
        Other tools
InferenceVarious inference/thresholding tools, including: Randomise (permutation-based inference tool for nonparametric statistical thresholding), cluster (cluster-based thresholding using GRF theory for inference), FDR (false discovery rate inference) and Glm (a GUI for creating model design matrices).
FSLViewInteractive display tool for 3D and 4D data.
AVWUTILSMisc utils for converting and processing images.

History and DevelopmentEdit

FSL is written mainly by members of the FMRIB Analysis Group, Oxford University, UK. The first release of FSL was in 2000; there has been approximately one major new release each year to date. The FMRIB Analysis Group is primarily funded by the UK EPSRC and MRC Research Councils.

See alsoEdit

External linksEdit

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