Thank you, but again I think that there might be no internal convert in my data from the recon-all log files.
The other data set I used had records about internal convert in their recon-all log file representing as (1 1 1)mm but this data was not. So I worry about whether correct internal convert was preprocessed or not. How can I confirm the processes? Sorry for bothering you. Thank you in advance. 2012년 5월 4일 금요일에 Bruce Fischl<fis...@nmr.mgh.harvard.edu>님이 작성: > if you give it to recon-all it will convert it internally, so you don't need to convert it yourself > On Fri, 4 May 2012, EK Kim wrote: > >> Thank you for the answer. But I still confuse to convert the data. >> Does this mean is it 'not okay' to convert the anisotropic data to the >> isotropic? >> Then should I analyze the original one? >> >> 2012? 5?4?????Bruce Fischl<fis...@nmr.mgh.harvard.edu>?? ??: >> > Hi EK >> > >> > it's an empirical question. That is *very* anisotropic, so I suspect that >> there will be unavoidable biases in things like thickness maps which will be >> more accurate in regions in which the folds happen to place the cortex in >> the high resolution plane. That said, if the CNR is good enough it will >> probably generate reasonable surfaces. >> > >> > cheers >> > Bruce >> > On Fri, 4 May 2012, EK Kim wrote: >> > >> >> Dear freesurfers, >> >> >> >> I wondered is it okay to analyze isotropic data which was converted to >> the >> >> anisotropic one. >> >> >> >> The original data has (0.390625, 0.390625, 1.5) mm size and (512, 512, >> 104) >> >> voxels. >> >> It obtained from 3T scanner. >> >> >> >> I know the Freesurfer recommend isotropic data (1,1,1)mm. >> >> Does it have any problem to use the data I just transformed? >> >> >> >> To do this, I rescaled the images and did bilinear interpolation to >> create >> >> an isotropic 8-bit version of images. >> >> >> >> >> >> Thanks for any help. >> >> >> >> EK >> >> >> >> >> >> >> > >> > >> > 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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