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Hi, Not sure what is happening here. We don't explicitly support Analyze anymore, but you can get rid of your origin by following the instructions in the email I sent in reply to your first email. All the best, Mark On 21 Oct 2009, at 06:20, Xi Liang wrote: > Dear all, > > Before asking the question, I first explain what I am trying to do. > In order to > use IRTK to run a nonrigid registration after using FLIRT,I have to > set the origin > in the image to 0,0,0. Then I use FSL to analyse and data and reset > the origin. > > By using fsldh, it shows the data has dimension of 128X128X124, and > pixdim is > 0.68 0.68 1, and the origin is 69, 77, 78 (as shown below). I guess > the pixdim is > measure by mm and origin is measured by voxel? If this is the case, > the > coordination system in X dim should be -(69 * 0.68) to (128-69)*0.68? > > data_type MR > dim1 128 > dim2 128 > dim3 124 > dim4 1 > datatype 4 > pixdim1 0.6800000072 > pixdim2 0.6800000072 > pixdim3 1.0000000000 > pixdim4 0.0000000000 > cal_max 2945.0000 > cal_min 0.0000 > glmax 2945 > glmin 0 > origin1 69 > origin2 77 > origin3 68 > file_type ANALYZE-7.5 > > Then I visualize the image from fslview, in the second colume of the > cursor > tools panel (left bottom cornor), it shows cursor position of the > voxel of (0,0,0) > is at (12405.92, -5622.24. -17608.00)mm, which is outside the range I > computed before. I do not know if I understand anything wrong here? > X 0 12405.92 > Y 0 -5622.24 > Z 0 -17608.00 > > > Regards, > > Xi >