MEGA-sLASER ON/OFF .RAWs to Osprey DIFF Basis Set

Analysis / Modeling Basis Sets
1

Hi all,
I’m working on creating a DIFF basis set for Osprey using a simulated MEGA-sLASER sequence (CMRR, TE = 68 ms) on a Siemens Skyra 3T system. I used @wclarke sequence information and simulated the spectra via FSL-MRS, which gave me ON and OFF .RAW files as well as ON/OFF/DIFF .json files.

However, I’m now a bit stuck on how to proceed:
:small_blue_diamond: FSL-MRS doesn’t output DIFF .RAW files, only DIFF .json
:small_blue_diamond: I need DIFF .RAW files (or .mat) to import into Osprey to create the basis set

What’s the recommended way to convert the ON and OFF .RAW files (LCModel-style) into DIFF .RAW or .mat files for use in Osprey’s fit_makeBasis?

Any suggestions, example scripts, or advice would be very much appreciated!

Thanks a lot in advance!