PiB voxel size conflict: FSL and AFNI read as 2x2x2 mm voxels due to header's s-form (despite header's pixdim values of 1.2x1.2x1.2 mm)

gistfile1.txt

$ 3dinfo ~/Downloads/ftp.medimg.emory.edu/NMCardiac/JonNye/PiB_binding_maps/NIFTI/VN040_20110412_LI_rsl.nii
++ 3dinfo: AFNI version=AFNI_2011_12_21_1014 (Dec  1 2012) [64-bit]

Dataset File:    /home/stowler-local/Downloads/ftp.medimg.emory.edu/NMCardiac/JonNye/PiB_binding_maps/NIFTI/VN040_20110412_LI_rsl.nii
Identifier Code: NII_MVGvk3_9itSHbYxclrBKWw  Creation Date: Tue Apr 23 12:23:56 2013
Template Space:  ORIG
Dataset Type:    Anat Bucket (-abuc)
Byte Order:      LSB_FIRST {assumed} [this CPU native = LSB_FIRST]
Storage Mode:    NIFTI
Storage Space:   25,090,560 (25 million) bytes
Geometry String: "MATRIX(-2,0,0,0,0,-2,0,0,0,0,2,0):198,198,160"
Data Axes Tilt:  Plumb
Data Axes Orientation:
  first  (x) = Left-to-Right
  second (y) = Posterior-to-Anterior
  third  (z) = Inferior-to-Superior   [-orient LPI]
R-to-L extent:  -394.000 [R] -to-    -0.000     -step-     2.000 mm [198 voxels]
A-to-P extent:  -394.000 [A] -to-    -0.000     -step-     2.000 mm [198 voxels]
I-to-S extent:     0.000     -to-   318.000 [S] -step-     2.000 mm [160 voxels]
Number of values stored at each pixel = 1
  -- At sub-brick #0 '?' datum type is float




fslhd ~/Downloads/ftp.medimg.emory.edu/NMCardiac/JonNye/PiB_binding_maps/NIFTI/VN040_20110412_LI_rsl.nii
filename       /home/stowler-local/Downloads/ftp.medimg.emory.edu/NMCardiac/JonNye/PiB_binding_maps/NIFTI/VN040_20110412_LI_rsl.nii

sizeof_hdr     348
data_type      FLOAT32
dim0           3
dim1           198
dim2           198
dim3           160
dim4           0
dim5           0
dim6           0
dim7           0
vox_units      mm
time_units     s
datatype       16
nbyper         4
bitpix         32
pixdim0        0.0000000000
pixdim1        1.2187500000
pixdim2        1.2187500000
pixdim3        1.2187500000
pixdim4        0.0000000000
pixdim5        0.0000000000
pixdim6        0.0000000000
pixdim7        0.0000000000
vox_offset     352
cal_max        0.0000
cal_min        0.0000
scl_slope      1.000000
scl_inter      0.000000
phase_dim      0
freq_dim       0
slice_dim      0
slice_name     Unknown
slice_code     0
slice_start    0
slice_end      0
slice_duration 0.000000
time_offset    0.000000
intent         Unknown
intent_code    0
intent_name    
intent_p1      0.000000
intent_p2      0.000000
intent_p3      0.000000
qform_name     Unknown
qform_code     0
qto_xyz:1      1.218750  0.000000  0.000000  0.000000
qto_xyz:2      0.000000  1.218750  0.000000  0.000000
qto_xyz:3      0.000000  0.000000  1.218750  0.000000
qto_xyz:4      0.000000  0.000000  0.000000  1.000000
qform_xorient  Left-to-Right
qform_yorient  Posterior-to-Anterior
qform_zorient  Inferior-to-Superior
sform_name     Scanner Anat
sform_code     1
sto_xyz:1      2.000000  0.000000  0.000000  0.000000
sto_xyz:2      0.000000  2.000000  0.000000  0.000000
sto_xyz:3      0.000000  0.000000  2.000000  0.000000
sto_xyz:4      0.000000  0.000000  0.000000  1.000000
sform_xorient  Left-to-Right
sform_yorient  Posterior-to-Anterior
sform_zorient  Inferior-to-Superior
file_type      NIFTI-1+
file_code      1
descrip        VN040, VN040
aux_file