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Hi - I don't think that the probtrackx stuff has changed significantly, Saad can comment if I"m wrong. Cheers. On 13 Aug 2008, at 18:27, Dianne Patterson wrote: > Dear Group, > > I don't want to treat new subjects differently than the old ones... > I have been using FDT and doing probability tracking. > I've used flirt a lot as well, and > I've also been experimenting with Nudge > > Is there any reason I should avoid moving from the most recent FSL > 4.0 to FSL 4.1? > > Thankyou! > > Dianne > > On Wed, Aug 13, 2008 at 9:54 AM, Matthew Webster <[log in to unmask] > > wrote: > Fsl 4.1.0 has been released and is now ready for download, new > features include: > > • FNIRT - FMRIB's Nonlinear Image Registration Tool. The first > release of an accurate and yet fast nonlinear registration tool. > This replaces IRTK, and is based on a similar warp field > representation, but a) includes relative bias field modelling for > improved accuracy and b) is very fast because of explicit > computation of the cost function Hessian. FEAT, MELODIC, TBSS and > FSL-VBM have all been updated to use FNIRT. > • FEAT v5.98. Various improvements, including FNIRT nonlinear > registration, outlier modelling in higher-level analysis and higher- > level voxelwise covariates (e.g., for structural confound > modelling). A new script feat_gm_prepare makes it easy to process > structural data for use as a higher-level voxelwise confound > covariate. > • randomise v2.1. Various improvements, including improved handling > of confounds, TFCE optimisation for TBSS and parallelisation over > multiple computers. > • FAST v4.1 is now the default tissue-type segmentation program, and > FAST v3 has been removed from FSL. Hence all programs including > SIENA/SIENAX now use FAST v4. > • FIRST subcortical segmentation is now considerably faster, has > improved boundary correction and now includes a cerebellum model. > • The outputting of ANALYZE files is no longer supported as the > format is now strongly discouraged. > > The binaries, sources and test data can be downloaded from: > > http://www.fmrib.ox.ac.uk/fsldownloads/ > > Matthew > > > > -- > Dianne Patterson, Ph.D. > [log in to unmask] > University of Arizona > SHLS 328 > 621-5105 --------------------------------------------------------------------------- Stephen M. Smith, Professor of Biomedical Engineering Associate Director, Oxford University FMRIB Centre FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK +44 (0) 1865 222726 (fax 222717) [log in to unmask] http://www.fmrib.ox.ac.uk/~steve ---------------------------------------------------------------------------