Question about using water reference in FID-A

Hello,

I am using the FID-A software to open a PRESS signal. The function I am using is this: io_loadspec_sdat("filename", 1). I am not sure whether the water reference is automatically considered in this function. If not, how can I include the water reference? For example, this is one of my signals opened using FID-A.

Would using the water reference improve the signal and enhance the metabolites around 3 and 2 ppm?

Thank you in advance!

Hi and welcome wesna,

What are the parameters for this acquisition and where did you acquire from?

I do not see any metabolite signals in this spectrum, and doing eddy-current correction will not do anything to help you better resolve signals that aren’t there in the first place.

You need to optimize your acquisition first to a point where you can see them (you’ll generally want to zoom in to the region between 1 and 4.5 ppm after loading to avoid the residual water peak).

Best,
Georg

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Hello @admin,

This dataset comes from a multivoxel acquisition, so some spectra are poor depending on the region. So in these cases, including or not including the water reference won’t make any difference?

For example, in general I usually open my acquisitions (especially Philips scans) without considering the water reference file. I use Gannet for MEGA-PRESS and FID-A for PRESS. Is that ok?

In Gannet, I know how to include the water reference file in the GannetLoad function, but in FID-A I have no idea how to do that.

Thank you for your help!