I did it. Thank you very much. C Il giorno 03/lug/2015 18:51, "Bruce Fischl" <fis...@nmr.mgh.harvard.edu> ha scritto:
> not sure. Did you use recon-all? If so, then you did use > "the appropriate pipeline provided by freesurfer" > On Fri, 3 Jul > 2015, clelia pellicano wrote: > > > > > Hi Bruce, > > > > thank you for your reply. Do you have any idea about what they could mean > > saying "without using the appropriate pipeline provided by freesurfer"? > > Thanks > > > > BW > > > > C > > > > Il giorno 03/lug/2015 15:32, "Bruce Fischl" <fis...@nmr.mgh.harvard.edu> > ha > > scritto: > > Hi Clelia > > > > yes, we correct for field inhomogeneity. Presumably they mean > > the B1 > > receive field, which is what is typically meant in structurals. > > If they > > mean B0, we don't typically correct (nor do most people for > > structural > > imaging - this is more of an issue for diffusion and functional > > MRI). > > > > cheers > > Bruce > > > > On Fri, 3 Jul 2015, clelia > > pellicano wrote: > > > > > Dear experts, > > > > > > I was wondering how freesurfer corrects for field > > dishomogeneity. > > > As long as I know, it's automatically done by the software . > > > My concern is because a reviewer has made this comment (please > > find it > > > below): > > > > > > "Authors used an old 3 T MRI without using the appropriate > > pipeline provided > > > by freesurfer to correct for field dysomogeneity" > > > > > > We have run the standard pipeline provided to derive measures > > of cortical > > > thickness and deep grey matter nuclei volume (FreeSurfer > > version 5.3.0 ). > > > > > > Here the MRI protocol used: > > > All participants were scanned on a 3-Tesla Philips Intera > > whole-body MRI > > > scanner. A T1-weighted three-dimensional > > magnetization-prepared rapid > > > acquisition gradient-echo (MPRAGE; time echo: 4.6 ms; time > > repetition: > > > 9.7ms; field of view: 240 ms; voxel size= 1 x1 x 1 mm) was > > acquired. > > > > > > Any clue about? > > > > > > Thank you in advance. > > > > > > BW > > > > > > Clelia > > > > > > > > > . Clelia Pellicano, MDPhD Student in Clinical and Experimental > > Neurosciences > > > and Psychiatry, > > > Department of Neuroscience, Mental Health and Sensory Organs, > > NESMOS, > > > Sapienza University > > > Via di Grottarossa 1035, 00189 Rome, Italy > > > phone +390633775579 > > > fax +390633775900 > > > > > > Research Neurologist > > > Department of Clinical and Experimental Neurology > > > Santa Lucia Foundation IRCSS > > > Via Ardeatina 306, 00179, Rome, Italy > > > > > > > > _______________________________________________ > > 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. > > > > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >
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