I fixed it. The problem was that the volume was extremely sparse (only about 40 non-zero voxels), and this exposed a bug in the conform histogram code.

On Wed, 31 Aug 2005, Doug Greve wrote:

don't know what happend there. How old is that mri_convert? You can try --conform instead of -rl

doug

Daniel Goldman wrote:

...

I recently received an error I've never seen before at the very end of a call to mri_convert:

INFO: set hdr.hist.orient to 'coronal flipped' mri_convert -ot spm -rl /space/windu/4/users/recon//ESWJ78_recon/mri/orig/ /space/windu/4/users/recon//ESWJ78_recon/mri/32echo/magnitude/parameter_maps_average/T2star.mgz /space/windu/4/users/recon//ESWJ78_recon/mri/32echo/magnitude/t2star_imgs/t2star_params.img reading from /space/windu/4/users/recon//ESWJ78_recon/mri/32echo/magnitude/parameter_maps_average/T2star.mgz... TR=1000.00, TE=0.00, TI=0.00, flip angle=0.00 i_ras = (-0.00513606, -0.981282, 0.192508) j_ras = (-0.0277379, -0.192297, -0.980945) k_ras = (-0.999602, 0.010378, 0.026231) reading template info from volume /space/windu/4/users/recon//ESWJ78_recon/mri/orig/... changing data type from 3 to 0 (noscale = 0)... MRIchangeType: Building histogram ERROR: MRISeqchangeType

Any idea as to what the problem might be? Thanks very much,

• Daniel Goldman

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