[Freesurfer] question regarding the comparison of two methods: repost

2011-05-03 Thread Jacobs H (NP)
Dear FreeSurfers, We are comparing two methods to measure the volume of a subcortical structure (our method and FreeSurfer). We want to compare them spatially, by doing a voxel-based analyses. We thought to isolate the structure from the aseg.mgh as well as our own structure. Then we

Re: [Freesurfer] question regarding the comparison of two methods: repost

2011-05-03 Thread Bruce Fischl
Hi Heidi, why do they have to be in a common space? You aren't comparing across subjects, just within subject across method. Or are you trying to make maps of accuracy? That will be hard to do unless you use our coordinate system to do your segmentation, which I assume you do not. In any case,