Hello! Thank You for the answer. So, If I understand this in good way - version 6.0 works with original data voxel size and the data are not conformed to voxel size 1x1x1 mm. Can I ask if also version 5.3 conform data that have different voxel size from 1x1x1 mm.
Thank You very much! patrik krumpolec 2018-02-01 16:13 GMT+01:00 Bruce Fischl <fis...@nmr.mgh.harvard.edu>: > Hi Patrik > > we report both the number of voxels and the volume of each structure in > the stats files. Even for 1mm data we use partial volume estimation in the > newer versions so that these numbers will not be the same. In general we > find that the partial volume estimation helps accuracy, and that 6.0 is > usually more accurate than 5.2 > > cheers > Bruce > > > On Thu, 1 Feb 2018, Patrik Krumpolec wrote: > > > I want to ask about differences in brain segmentation with freesurfer > version 5.2.0 and 6.0.0.My > > dicom data have original size 0.375x0.375x0.75 mm and 600, 640, 224 > voxels. If I process the data > > vith the version 5.2.0, freesurfer conformed the data to 1 mm size and > 256 voxels for all > > directions. In the result brain structures has volume eguals to number > of voxels. > > But if i use version 6.0.0, there are data not conformed and in the > results the volume of structure > > is different form number of voxels. > > > > So, now I don't know what results is correct: from the version 5.2.0 or > 6.0.0 > > > > At first I think that version 6.0.0 is not good because my collegues > from another institution have > > results with the volume eguals to number of voxels (version 5.3) but > they have data with voxel size > > 1x1x1 mm. So, I think that it is natural that volume is eguals to number > of voxels. But my data have > > not 1x1x1 mm voxel size. > > > > Please, Could You help me! Thank You very much! > > > > patrik krumpolec > > > > > _______________________________________________ > 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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