Thanks, Jennifer and Michael. Best, Chao
On Wed, Nov 22, 2017 at 3:38 PM, Harms, Michael <mha...@wustl.edu> wrote: > > > Hi, > > In FS, “Intracranial volume”, renamed to “EstimatedTotalIntraCranialVol” > (aka “eTIV”) in more recent FS versions, is solely based on the determinant > of a talairach transform that is internal to FS. That particular transform > does not necessarily need to be accurate for FS to generate accurate > surfaces/segmentations, so we did not QC it. For that reason, I do not > recommend using it. > > > > Cheers, > > -MH > > > > -- > > Michael Harms, Ph.D. > > ----------------------------------------------------------- > > Conte Center for the Neuroscience of Mental Disorders > > Washington University School of Medicine > > Department of Psychiatry, Box 8134 > > 660 South Euclid Ave > <https://maps.google.com/?q=660+South+Euclid+Ave&entry=gmail&source=g>. > Tel: 314-747-6173 <(314)%20747-6173> > > St. Louis, MO 63110 Email: > mha...@wustl.edu > > > > *From: *<hcp-users-boun...@humanconnectome.org> on behalf of Chao Zhang < > cha...@gmail.com> > *Date: *Wednesday, November 22, 2017 at 2:25 PM > *To: *"hcp-users@humanconnectome.org" <hcp-users@humanconnectome.org> > *Subject: *[HCP-Users] FreeSurfer brain volume question > > > > Hi > > > > We were checking the FS brain volumes and found that out of the 1113 > subjects for 14 subjects the FS_BrainSeg_Vol is larger than the > FS_IntraCranial_Vol (so that the column FS_BrainSegVol_eTIV_Ratio is larger > than 1). We wonder if this is due to some error in calculating either of > the two columns (FS_BrainSeg_Vol, FS_IntraCranial_Vol)? Thanks! > > > > Best, > > Chao > > > > > > > > > > > > > > _______________________________________________ > HCP-Users mailing list > HCP-Users@humanconnectome.org > http://lists.humanconnectome.org/mailman/listinfo/hcp-users > > > ------------------------------ > > The materials in this message are private and may contain Protected > Healthcare Information or other information of a sensitive nature. If you > are not the intended recipient, be advised that any unauthorized use, > disclosure, copying or the taking of any action in reliance on the contents > of this information is strictly prohibited. If you have received this email > in error, please immediately notify the sender via telephone or return mail. > _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org http://lists.humanconnectome.org/mailman/listinfo/hcp-users
