I am new to using fieldmaps, and I attempted to use the 'Presubtracted Phase
and Magnitude Data' module in SPM8 but am getting the following error
message:
Running 'Presubtracted Phase and Magnitude Data'
Failed 'Presubtracted Phase and Magnitude Data'
Attempted to access V.dim(4); index out of bounds because numel(V.dim)=3.
In
file "/fmritools/matlab/toolbox/spm8/toolbox/marsbar/spm99/spm_write_vol.m"
(???), function "spm_write_vol" at line 22.
In file "/fmritools/matlab/toolbox/spm8/toolbox/FieldMap/FieldMap.m" (v3016),
function "FieldMap" at line 1708.
In file "/fmritools/matlab/toolbox/spm8/toolbox/FieldMap/FieldMap.m" (v3016),
function "FieldMap" at line 1487.
In file "/fmritools/matlab/toolbox/spm8/toolbox/FieldMap/FieldMap_Run.m"
(v3085), function "FieldMap_Run" at line 84.
In file "/fmritools/matlab/toolbox/spm8/toolbox/FieldMap/tbx_cfg_fieldmap.m"
(v3085), function "fieldmap_presubphasemag" at line 603.
It seems like the error means I am trying to use 4D files but the program wants
3D? But as far as I can tell all my files are 3D except for the 'EPI to Unwarp'
where I selected the first TR of the first run.
Any thoughts on how to prevent this error message?
Thanks!
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