Several ways to do that. For instance, you can run probtrackx with Maximum number of steps=2 (in advanced options of the GUI), and check that fdt_paths shows the mask in the correct location. Saad On 23 Jul 2013, at 04:34, YM Huh <[log in to unmask]> wrote: > Hi, > I have a question about probtrackX. > I put seed mask (which is in standard space) and standard2diff transform matrix (inverse transform matrix), and ran probtrackX. > How can I check If seed mask is properly transformed by the inverse matrix? > > > YM Huh > -- Saad Jbabdi University of Oxford, FMRIB Centre JR Hospital, Headington, OX3 9DU, UK (+44)1865-222466 (fax 717) www.ndcn.ox.ac.uk/team/researchers/saad-jbabdi