questions > Spectroscopy sequences conversion
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Dec 6, 2022  03:12 PM | rbonicel
Spectroscopy sequences conversion
Dear Nick,

I have a MRI protocol on a Philips Ingenia 3T machine that contains two spectroscopy sequences : HERMES and SVS_Press. I have exctracted said sequences in dcm image format, and converted them using dcm2niix version v1.0.20181125 (JP2:OpenJPEG) GCC9.3.0 (64-bit Linux), along with other sequences in the protocol.

I get a .nii.gz and .json file for each of these two sequences, but I can't open them to see what the file contain.

So my question is : is dcm2niix giving a meaningful .nii.gz conversion for spectro data ? I've also seen the spec2nii module that can be of use, as I on't know which one to use.

Could you please help me see more clearly on that matter ?

Best regards,
Robin
Dec 6, 2022  04:12 PM | Chris Rorden
RE: Spectroscopy sequences conversion
Robin,
 I am not aware of anyone named Nick involved with the development of dcm2niix or spec2nii. dcm2niix is tuned for converting images, while spec2nii handles spectography data. I am not familiar with MRS, so perhaps you would be best served reading William T Clarke's web pages and generated an issue on those repositories if those do not resolve your questions.
   https://github.com/wtclarke/spec2nii
   https://github.com/wtclarke/mrs_nifti_standard
Dec 7, 2022  08:12 AM | rbonicel
RE: Spectroscopy sequences conversion
Dear Chris Rorden,

Sorry, I got mixed up between my emails and this question. I meant to to write to you in the first place.

Ok, so, what I get from your reply is that although we have dcm files for spectroscopy sequences that get converted without any issue to nifti format using dcm2niix, the result doesn't mean anything, and I should use spec2nii and indeed contact William T Clarke if I have any issue.

Thank you for your reply.

Best,
Robin