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Hello FreeSurfer Developers,
I'm attempting to refine pial surfaces with T2/FLAIR images as described here ( https://secure-web.cisco.com/1AH1BRBqXr5DfxhMfqvYMi7G1gSsW58-k5PUb3k7qBej25T...). For some of my subjects I get the following error during the mris_place_surface subprocess when I run recon-all:
error: MRIhistogramLabelRegion: constant image
error: MRIhistogramLabelRegion: constant image
Segmentation fault
The error occurs independent of whether I process T1 and T2 images together with -all or if I run only -autorecon3 with the T2 or FLAIR images added.
I've searched the list and while similar errors have been reported, no solutions have been proposed. Does anyone have any thoughts on how to troubleshoot this one?
1) FreeSurfer version: freesurfer-macOS-darwin_x86_64-7.4.1-20230614-7eb8460 2) Platform: macOS Sonoma 14.6.1 3) uname -a: Darwin MacBook-Air-M3 23.6.0 Darwin Kernel Version 23.6.0: Mon Jul 29 21:14:04 PDT 2024; root:xnu-10063.141.2~1/RELEASE_ARM64_T8122 arm64 4) recon-all.log: relevant section below
Thank you! Thomas
mris_place_surface --adgws-in ../surf/autodet.gw.stats.lh.dat --seg aseg.presurf.mgz --wm wm.mgz --threads 8 --invol brain.finalsurfs.mgz --lh --i ../surf/lh.pial.T1 --o ../surf/lh.pial.T2 --pial --nsmooth 0 --rip-label ../label/lh.cortex+hipamyg.label --pin-medial-wall ../label/lh.cortex.label --white-surf ../surf/lh.white --aparc ../label/lh.aparc.annot --repulse-surf ../surf/lh.white --mmvol T2.mgz T2
Reading in input surface ../surf/lh.pial.T1
Not smoothing input surface
Area 280714 0.42434 0.32508 0.000178 6.1090
Corner 842142 60.00000 30.99319 0.049953 179.7466
Edge 421071 1.04711 0.48130 0.006015 7.4374
Hinge 421071 18.87838 25.11022 0.000011 179.9979
Reading white surface coordinates from ../surf/lh.white
Reading repulsion surface coordinates from ../surf/lh.white
Reading in aparc ../label/lh.aparc.annot
[DEBUG] CTABreadFromBinaryV2(): ct->nentries=36, num_entries_to_read=36
Reading in input volume brain.finalsurfs.mgz
Reading in seg volume aseg.presurf.mgz
Reading in wm volume wm.mgz
MRIclipBrightWM(): nthresh=15378, wmmin=5, clip=110
MRIfindBrightNonWM(): 1814 bright non-wm voxels segmented.
Masking bright non-wm for pial surface mid_gray = 67.5589
MRImask(): AllowDiffGeom = 1
MRImask(): AllowDiffGeom = 1
MRImask(): AllowDiffGeom = 1
Ripping frozen voxels
Ripping vertices not in label ../label/lh.cortex+hipamyg.label
MRISripNotLabel() ripped 6543/140359 vertices (133816 unripped)
INFO: rip surface needed but not specified, so using input surface
Ripping segs (eg, WMSA, BG, frozen)
Starting MRISripSegs() d = (-2 2 0.5) segnos: 247
MRISripSegs(): -2 2 0.5 ripped 0
Reading in multimodal volume T2.mgz
using multi modal weights
vertex 70180: xyz = (-39.3637,-26.8713,28.9107) oxyz = (-42.1603,-27.2597,31.4024) wxzy = (-42.1603,-27.2597,31.4024) pxyz = (-39.3637,-26.8713,28.9107)
CBVO Creating mask 140359
n_averages 4
Iteration 0 =========================================
n_averages=4, current_sigma=2
Computing pial target locations using multimodal (1)
starting MRIScomputePialTargetLocationsMultiModal()
max_outward_dist = 3, sample_dist = 0.1, pix_size = 1, whalf = 7
T2_min_inside = 110, T2_max_inside 300, T2_min_outside = 130, T2_max_outside 300
inside_peak_pct = 0.1, 0.01, outside_peak_pct = 0.5, 0.5
wm_weight = 3, nlabels=0, contrast_type=1
Changed 198177 aseg cortex voxels to 0
Creating lowres distance volumes t=0.0164299
Creating white distance volumes t=0.307498
(box.dx, box.dy, box.dz) = (132, 242, 326)
(region->dx, region->dy, region->dz) = (132, 242, 326)
(region->dx, region->dy, region->dz) = (132, 242, 326)
Creating pial distance volumes t=0.609579
(box.dx, box.dy, box.dz) = (144, 256, 336)
(region->dx, region->dy, region->dz) = (144, 256, 336)
(region->dx, region->dy, region->dz) = (144, 256, 336)
locating cortical regions not in interior range [110.0 --> 300.0], and not in exterior range [130.0 --> 300.0]
t = 0.984043
Starting loop over 140359 vertices
vno = 0, t = 0.984043
error: MRIhistogramLabelRegion: constant image
error: MRIhistogramLabelRegion: constant image
Segmentation fault