Interpretation of HERCULES data

Hello,

How can I manipulate the transients in the HERCULES data considering the GABA metabolite?

For example, in MEGA-PRESS data the structure created by GannetLoad() takes us mrs.fids.ON_OFF with dimension 1x320 and mrs.fids.data with dimension (2048x320) and in this case I know that each transient in mrs.fids.data corresponds to interleaved ON and OFF transients according to mrs.fids.ON_OFF. However, in the HERCULES data, mrs.fids.ON_OFF has a dimension (2x320) with a different pattern. How can I interpret this? I know HERCULES is collected in 4 sequences instead of 2 sequences like MEGA-PRESS.

I tried to consider only the second line of mrs.fids.ON_OFF (because it looks like the MEGA-PRESS standard), but I think this is not right.

If anyone has a suggestion or even an article recommendation I would be very grateful :slight_smile: