Shame to admit - we didn't think about it. After the visual inspection - something obviously went wrong. We'll try to correct manually. Thanks for the tip!
Best regards, Patrycja 2017-11-28 16:00 GMT+01:00 Bruce Fischl <fis...@nmr.mgh.harvard.edu>: > Hi Patrycja > > did you check to see if the talairach transform was reasonably accurate? > > cheers > Bruce > On Tue, 28 Nov 2017, Patrycja Naumczyk wrote: > > Hi experts! >> We are doing some QA exams with one subject scanned on different 3T >> scanners (with comparable/nearly >> identical imaging parameters). Afterwards, we looked into aseg values to >> compare them with the >> standard recon-all procedure. And we came across a strange result. >> Between two scanners the raw >> volumes are roughly the same, but the eICV's differ a lot (almost 30%). >> We looked into the data and >> found that even the mask volumes are alike (they differ less than 5% >> between the machines). the only >> outlier value is the eICV of one of the scanners. As this value is >> estimated, can this be a marker >> of some difficulties in normalization to Talairach upon the data of the >> scanner? Should it be >> alarming when an eICV is 30% lower than the mask volume? >> >> Best regards, >> Patrycja >> >> [icon-envelope-tick-round-orange-animated-no-repeat-v1.gif] >> Wolny od wirusów. www.avast.com >> >> > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > 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 . 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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