Hi Alex,
the 2mm slice thickness could be trouble. Usually we don't recommend trying
to recon cortical models with any dimension greater than 1.5mm. Why do
anisotropic? Can you describe the rest of the acquisition parameters?
Bruce
On Tue, 13 Sep 2005, Fornito, Alexander wrote:
HI,
I've got some 3T SPGR data (512 x 512 x 104, vox dim. 0.488 x 0.488 x 2). I seem to be
able to convert them to .mgz ok, but when I run mri_watershed I get an error saying
"main radius too high" (output below). Any ideas as to what's happening?
Thanks,
Alex
mri_watershed 1001670.mgz 1001670_brain.mgz
************************************************************
The input file is 1001670.mgz
The output file is 1001670_brain.mgz
If this is incorrect, please exit quickly the program (Ctl-C)
*************************WATERSHED**************************
preflooding height equal to 25 percent
Sorting...
first estimation of the COG coord: x=253 y=50 z=235 r=135
first estimation of the main basin volume: 10415397 voxels
Error
main radius too high
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