Gabriel,
Have you tried to relaunch the lgi computation once? Sometimes it crash the first time but when you launch it again it finishes properly.
If it still fails, the next thing to do is to check mris_euler_number and visually check for any defects in the cortical surface. If there is a defect, you have to correct it and recreate the surface. And even if there is no topological defects, I have always found that simply recreating the surface for the problematic hemisphere without changing anything (recon-all -hemi ?h -stage 2, and then -stage3) will solve most problems in lgi computation. (Let me know if not)
Marie
Quoting "Gabriel Go.Es." gabriellbk@hotmail.com:
hello
i'm running the LGI for all my subjects, and i have no problem with almost all, but, i recibe an error message with one subject, and just with the right hemisphere no problem when making Left hemisphere, does anybody knows what can i do for correcting that error and to calculate the LGI?.
the error message is: ...
lGI for vertex number 33301 of the outer mesh is 2.2086
lGI for vertex number 33401 of the outer mesh is 2.8605
... remeasuring lGI value for vertex iV = 33501. It may take a few minutes.
WARNING -- Problem for vertex iV = 33501, lGI value is aberrantly high (lGI=43.811)...
...lGI computation will be stopped. This may be caused by topological defects, check mris_euler_number on the pial surface.
ERROR: compute_lgi did not create output file 'tmp-mris_compute_lgi-rh.pial/rh.pial_lgi.asc'!
Linux localhost.localdomain 2.6.9-34.ELsmp #1 SMP Thu Mar 9 06:23:23 GMT 2006 x86_64 x86_64 x86_64 GNU/Linux
recon-all exited with ERRORS at Fri Apr 3 19:47:35 CEST 2009
Regards Gabriel
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