hi bruce, i visualized these two subjects using freeview and nothing looked out of the ordinary.
$ cat /mindhive/xnat/surfaces/adhd200/3684229/stats/aseg.stats | grep -i amy 13 18 1764 1764.0 Left-Amygdala 64.7514 7.5831 36.0000 90.0000 54.0000 28 54 1706 1706.0 Right-Amygdala 64.3900 7.7036 11.0000 89.0000 78.0000 $ cat /mindhive/xnat/surfaces/adhd200/0010079/stats/aseg.stats | grep -i amy 13 18 1543 1543.0 Left-Amygdala 58.6062 7.8497 31.0000 90.0000 59.0000 28 54 1706 1706.0 Right-Amygdala 60.1369 7.7914 31.0000 84.0000 53.0000 does this generation take partial volume into account? this is the default output from running recon-all (from 5.1.0). cheers, satra On Mon, Jul 8, 2013 at 5:14 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu>wrote: > Hi Satra > > this seems vanishingly unlikely to me, particularly with partial volume > correction. Have you visualize some of the subjects that have the same > structure volume? > > Bruce > > On Mon, 8 Jul 2013, Satrajit Ghosh wrote: > > a quick update. the following fiddle will show the number of subjects that >> have an identical the same Right Amygdala volume. It simply plots a >> histogram of the counts per volume (scroll to the bottom of the result >> window). >> http://fiddle.jshell.net/**satra/MXKY6/6/<http://fiddle.jshell.net/satra/MXKY6/6/> >> >> cheers, >> >> satra >> >> >> On Mon, Jul 8, 2013 at 1:07 PM, Satrajit Ghosh <sa...@mit.edu> wrote: >> hi, >> >> trying to figure out the likelihood of identical subcortical volumes >> across individuals. i'm noticing this in some data processed with >> FreeSurfer 5.1.0. >> >> just to give some probabilities - these are out of about 963 >> participants. >> >> and there are several such small clusters of identical numbers - never >> exceeding 6 participants i believe. >> >> cheers, >> >> satra >> 0021003 >> aseg.stats >> http://freesurfer.net/fswiki/**terms/Right-Hippocampus<http://freesurfer.net/fswiki/terms/Right-Hippocampus> >> "4142.0"^^<http://www.w3.org/**2001/XMLSchema-datatypes#float<http://www.w3.org/2001/XMLSchema-datatypes#float> >> **> >> 0015035 >> aseg.stats >> http://freesurfer.net/fswiki/**terms/Right-Hippocampus<http://freesurfer.net/fswiki/terms/Right-Hippocampus> >> "4142.0"^^<http://www.w3.org/**2001/XMLSchema-datatypes#float<http://www.w3.org/2001/XMLSchema-datatypes#float> >> **> >> 3976121 >> aseg.stats >> http://freesurfer.net/fswiki/**terms/Right-Hippocampus<http://freesurfer.net/fswiki/terms/Right-Hippocampus> >> "4142.0"^^<http://www.w3.org/**2001/XMLSchema-datatypes#float<http://www.w3.org/2001/XMLSchema-datatypes#float> >> **> >> 1623716 >> aseg.stats >> http://freesurfer.net/fswiki/**terms/Right-Amygdala<http://freesurfer.net/fswiki/terms/Right-Amygdala> >> "1603.0"^^<http://www.w3.org/**2001/XMLSchema-datatypes#float<http://www.w3.org/2001/XMLSchema-datatypes#float> >> **> >> 0023005 >> aseg.stats >> http://freesurfer.net/fswiki/**terms/Right-Amygdala<http://freesurfer.net/fswiki/terms/Right-Amygdala> >> "1603.0"^^<http://www.w3.org/**2001/XMLSchema-datatypes#float<http://www.w3.org/2001/XMLSchema-datatypes#float> >> **> >> 0023008 >> aseg.stats >> http://freesurfer.net/fswiki/**terms/Right-Amygdala<http://freesurfer.net/fswiki/terms/Right-Amygdala> >> "1603.0"^^<http://www.w3.org/**2001/XMLSchema-datatypes#float<http://www.w3.org/2001/XMLSchema-datatypes#float> >> **> >> 0027025 >> aseg.stats >> http://freesurfer.net/fswiki/**terms/Right-Amygdala<http://freesurfer.net/fswiki/terms/Right-Amygdala> >> "1603.0"^^<http://www.w3.org/**2001/XMLSchema-datatypes#float<http://www.w3.org/2001/XMLSchema-datatypes#float> >> **> >> 1341865 >> aseg.stats >> http://freesurfer.net/fswiki/**terms/Right-Amygdala<http://freesurfer.net/fswiki/terms/Right-Amygdala> >> "1603.0"^^<http://www.w3.org/**2001/XMLSchema-datatypes#float<http://www.w3.org/2001/XMLSchema-datatypes#float> >> **> >> 2947936 >> aseg.stats >> http://freesurfer.net/fswiki/**terms/Right-Amygdala<http://freesurfer.net/fswiki/terms/Right-Amygdala> >> "1603.0"^^<http://www.w3.org/**2001/XMLSchema-datatypes#float<http://www.w3.org/2001/XMLSchema-datatypes#float> >> **> >> >> >> >> >> > > The information in this e-mail is intended only for the person to whom it > is > addressed. If you believe this e-mail was sent to you in error and the > e-mail > contains patient information, please contact the Partners Compliance > HelpLine at > http://www.partners.org/**complianceline<http://www.partners.org/complianceline>. > If the e-mail was sent to you in error > but does not contain patient information, please contact the sender and > properly > dispose of the e-mail. > >
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