I am getting an error running mri_normalize (as part of recon-all) on a particular subject's volume.
Here is the command from recon-all: mri_normalize -g 1 nu.mgz T1.mgz
Here is the output: WM removal version using max gradient = 1.000 reading from nu.mgz... normalizing image... talairach transform 0.860 -0.007 -0.123 -96.500; -0.087 0.643 -0.647 -17.669; 0.096 0.653 0.636 -156.251; 0.000 0.000 0.000 1.000; INFO: Modifying talairach volume c_(r,a,s) based on average_305 MRInormalize: could not find any valid peaks mri_normalize: normalization failed
nu.mgz looks fine, so I wonder what could be the problem. Any ideas?
check the talairach transform and see if it's reasonable. If it is, feel free to put the nu.mgz on our drop site (with the talairach.xfm) and I'll take a look.
cheers, Bruce On Mon, 10 Jul 2006, Don Hagler wrote:
I am getting an error running mri_normalize (as part of recon-all) on a particular subject's volume.
Here is the command from recon-all: mri_normalize -g 1 nu.mgz T1.mgz
Here is the output: WM removal version using max gradient = 1.000 reading from nu.mgz... normalizing image... talairach transform 0.860 -0.007 -0.123 -96.500; -0.087 0.643 -0.647 -17.669; 0.096 0.653 0.636 -156.251; 0.000 0.000 0.000 1.000; INFO: Modifying talairach volume c_(r,a,s) based on average_305 MRInormalize: could not find any valid peaks mri_normalize: normalization failed
nu.mgz looks fine, so I wonder what could be the problem. Any ideas?
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Don Hagler