To answer your question more completely, we're trying to compare two
files with the following headers:
Freesurfer segmentation:
height = 256
width = 256
depth = 256
nframe = 1
imnr0 = 1
imnr1 = 256
xnum = 256
ynum = 256
fov = 256.000000
thick = 1.000000
xstart = -128.000000
xend = 128.000000
ystart = -128.000000
yend = 128.000000
zstart = -128.000000
zend = 128.000000
type = 0
xsize = 1.000000
ysize = 1.000000
zsize = 1.000000
x ras = -1.000000 0.000000 0.000000
y ras = 0.000000 0.000000 -1.000000
z ras = 0.000000 1.000000 0.000000
c ras = 0.000000 -0.000015 17.750004
det(xyz_ras) = -1.000000
ras_good_flag = 1
brightness = 1
subject_name =
path_to_t1 =
fname_format =
Target image:
height = 256
width = 256
depth = 120
nframe = 1
imnr0 = 1
imnr1 = 120
xnum = 256
ynum = 256
fov = 256.000000
thick = 1.000000
xstart = -128.000000
xend = 128.000000
ystart = -128.000000
yend = 128.000000
zstart = -60.000000
zend = 60.000000
type = 3
xsize = 0.976562
ysize = 0.976562
zsize = 1.300000
x ras = 1.000000 0.000000 0.000000
y ras = 0.000000 -1.000000 0.000000
z ras = 0.000000 0.000000 1.000000
c ras = 0.000000 0.000000 17.749996
det(xyz_ras) = -1.000000
ras_good_flag = 1
brightness = 1
subject_name =
path_to_t1 =
fname_format =
It's also acceptable to convert the target image to the freesurfer
output space, as long as structure volumes in the segmentation are
preserved.
Thanks again,
Jeff
Bruce Fischl wrote:
what are the voxel sizes?
On Wed, 18 Feb 2009, Jared Price wrote:
Dear gurus,
when running mri_convert -rt nearest -ot nii -rl 001.mgz
seg_edited.mgz seg_edited_axial.nii to reslice from coronal to axial
space we are seeing some significant volume changes in the
segmentation. Anyone know why or how to fix it.
Jared
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