I'm working on converting a large set of DTI dicoms to nifti using dcm2nii and while I able to successfully generate the .nii.gz files for each set of dicoms I am only getting the .bval and .bvec files for some of them. There doesn't seem to be a consistent vendor, model, pulse sequence, diffusion direction, diffusion gradient, set of b values, etc that predicts whether the .bval and .bvec files will be generated so I was hoping I could get a list of what header tags dcm2nii looks at to generate those files.

Thanks,
Graham