I wanted to make a topic here about the proposed MRS BIDS format extension. This is so that we could have a place for discussion and hopefully move the proposal forward as a community. I’ll give a brief overview in this post and then add some of my thoughts in another post below.
For those unfamiliar with BIDS it stands for Brain Imaging Data Structure. BIDS is a specification for arranging brain imaging data measured from multiple formats and modalities in a certain structure in a file system. A dataset adhering to BIDS is immediately more easily understood by other people, software and maybe even you. Much more information is available on the bids website.
BIDS does not currently include any specification for spectroscopy data, focussing mainly on (functional) MRI. However, several modalities (MEG and EEG for example) have successfully been integrated into BIDS using the BIDS community extension proposals. Such a proposal has been made for MRS, originally by Dickson Wong, which can be found here.
The proposal needs to cover a few areas:
- A file format for MRS data
- A format for any meta data
- A specification for both required and optional meta data.
- File naming conventions
Currently the proposal contains suggestions for these fields for SVS (edited and non-edited) and proposes using a combination of tab separated files and JSON files. There has been discussion on this document recently about the current suggestions but it currently lacks direction and is difficult to monitor. I hope we can move it along here. More on my thoughts below.