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Hi, Yes, it is usual for transformation of any image to make it somewhat blurry, due to the interpolation. If you are worried about that then you can try nearest neighbour interpolation instead, which can look a bit "chunky" but will be less blurry. All the best, Mark On 24 Jun 2009, at 11:10, Ed Roberts wrote: > Hi, > > I'm trying to warp tractography results to standard space for a group > comparison, > and I'd just like to check I've got my method right. > > I'm using applyxfm and the warp matrices from the FA folder in TBSS > as the > transformation matrix, and FMRIB58 all FA as the reference volume. > > I've found that the tracking results get a bit blurred out, is that > to be > expected? > > Cheers, > > Ed >