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You already have this - the spatial ICA maps. On 9 Apr 2013, at 16:35, "Franklin, Crystal G" <[log in to unmask]> wrote: > Will we be able to get a map from this? > > Crystal > > From: Stephen Smith <[log in to unmask]> > Reply-To: FSL - FMRIB's Software Library <[log in to unmask]> > Date: Tuesday, April 9, 2013 10:24 AM > To: "[log in to unmask]" <[log in to unmask]> > Subject: Re: [FSL] FDG PET with Melodic > > Hi > In this case the ICA "time series" are the subject weights - so (e.g.) read melodic_mix into Matlab, identify the column number that matches the spatial map component number that you "like" - and then do a statistical test between different timepoints (subjects) in that column of weights. > Steve. > > > > On 9 Apr 2013, at 16:13, "Franklin, Crystal G" <[log in to unmask]> wrote: > >> Thank you for your quick response. >> >> So I have concatenated all my single subject images into a 4D NIFTI image and ran them through Melodic using single-session. Now I have my components, but I am stuck on how to get my group differences. Any suggestions? >> >> Thank you, >> Crystal >> >> From: Stephen Smith <[log in to unmask]> >> Reply-To: FSL - FMRIB's Software Library <[log in to unmask]> >> Date: Tuesday, April 9, 2013 9:21 AM >> To: "[log in to unmask]" <[log in to unmask]> >> Subject: Re: [FSL] FDG PET with Melodic >> >> Hi - yes this should be possible. If you have "time series" data for each subject then you should use group-ICA and dual-regression; if you only have a single summary image per subject then you should concatenate all images into a 4D NIFTI image and run "single-session" (default) melodic. >> >> Steve. >> >> >> On 9 Apr 2013, at 14:22, "Franklin, Crystal G" <[log in to unmask]> wrote: >> >>> Dear FSL, >>> >>> I have a FDG PET study that contains 79 subjects that are either FH+ or FH-. The data has already been preprocessed and registered into standard space. I am now wanting to do an ICA analysis to get the components and then do group comparisons with these components. Is this possible and if so, how do I go about setting this analysis up. >>> >>> Thank you, >>> Crystal >> >> >> --------------------------------------------------------------------------- >> 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 >> --------------------------------------------------------------------------- >> >> >> > > > --------------------------------------------------------------------------- > 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 > --------------------------------------------------------------------------- > > > --------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------