Hi,
> can I ask you a few questions?
You can always ask :)
> 1 if I needed to have 2 mags and 2 phases?
> 2 if I just have 1 each is that ok?
You should have 3 or 4 images: 2 magnitude and 2 phase, or 1 phase
difference map.
> 3 also do I need to scale to radians?
> 4. EPI-based map yes?
> 5. +ve?
Depends on the sequence. As I asaid, get in touch with your local
sequence gurus and they will tell you.
> 6. Jacobian No?
No.
> 7. our data comes in dicom which we convert with spm8 to nifti
> then we we create the fdp file after calculate and write options the
> file is created by cant be seen by spm8 is this because of the
> extension .nii is it looking for a .img?
This should not be the problem. I would think that if the above options
are entered correctly, spm should have no trouble reading the file.
> 8. Finally ms is this in the fieldmap protocol?
Yes (see comment to 3-5 above :)
Cheers,
Marko
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Marko Wilke (Dr.med./M.D.)
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Universitäts-Kinderklinik University Children's Hospital
Abt. III (Neuropädiatrie) Dept. III (Pediatric neurology)
Hoppe-Seyler-Str. 1, D - 72076 Tübingen
Tel.: (+49) 07071 29-83416 Fax: (+49) 07071 29-5473
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