Image orientation for Burker scanner

, ,
1

If images were acquired in axial orientation, can I say that they are “j” given header below?

Thanks,

Jennifer


sizeof_hdr      348
data_type       FLOAT32
dim0            4
dim1            64
dim2            64
dim3            35
dim4            172
dim5            1
dim6            1
dim7            1
vox_units       mm
time_units      s
datatype        16
nbyper          4
bitpix          32
pixdim0         1.000000
pixdim1         4.000000
pixdim2         4.000000
pixdim3         4.000000
pixdim4         3.000000
pixdim5         0.000000
pixdim6         0.000000
pixdim7         0.000000
vox_offset      8736
cal_max         0.000000
cal_min         0.000000
scl_slope       0.000000
scl_inter       0.000000
phase_dim       0
freq_dim        0
slice_dim       3
slice_name      Unknown
slice_code      0
slice_start     0
slice_end       34
slice_duration  0.000000
toffset         0.000000
intent          Unknown
intent_code     0
intent_name
intent_p1       0.000000
intent_p2       0.000000
intent_p3       0.000000
qform_name      Scanner Anat
qform_code      1
qto_xyz:1       -4.000000 0.000000 0.000000 126.000000
qto_xyz:2       0.000000 -4.000000 0.000000 126.000000
qto_xyz:3       0.000000 0.000000 4.000000 -68.000000
qto_xyz:4       0.000000 0.000000 0.000000 1.000000
qform_xorient   Right-to-Left
qform_yorient   Anterior-to-Posterior
qform_zorient   Inferior-to-Superior
sform_name      Scanner Anat
sform_code      1
sto_xyz:1       -4.000000 -0.000000 -0.000000 126.000000
sto_xyz:2       -0.000000 -4.000000 -0.000000 126.000000
sto_xyz:3       0.000000 0.000000 4.000000 -68.000000
sto_xyz:4       0.000000 0.000000 0.000000 1.000000
sform_xorient   Right-to-Left
sform_yorient   Anterior-to-Posterior
sform_zorient   Inferior-to-Superior
file_type       NIFTI-1+
file_code       1
descrip
aux_file
2

Hi, what does “j” mean? This shows an image in LPS orientation. If you want to know what the correct PhaseEncodingDirection is, then j would be Anterior-to-Posterior (j- would be Posterior-to-Anterior). There’s nothing in the phase_dim field of the NIfTI header shown here to corroborate that, though, so this is going off of very little.