mri_info will give freesurfer-specific info. You can use FSL's avwinfo too. I don't have anything that explicitly extracts the b-value (and as Bruce mentions there's no place in the nifti header for it yet), but you can do something like:

mri_probedicom --i dicomfile | grep "sDiffusion.alBValue[1]" | awk '{print $3}'

How are the drections stored?

doug

On Sun, 27 Aug 2006, Bruce Fischl wrote:

try:

mri_info <file name>

not sure about the DTI stuff - I'll leave that for Doug, although I don't think nifti has slots for things like gradient directions yet.

Bruce

On Sun, 27 Aug 2006, Najmeh Khalili M. wrote:

...

Hello,

I was wondering if there is a command that dumps the header information of .nii file.

Also, does mri_convert transfer dti acquisition parameters (b-value, directions) from the DICOM to nifti? (Our dti sequence does write its parameters to the DICOM file.)

Any pointer's appreciated.

cheers, Naj

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