Drift in the spectrum

@admin @Helge
Here we performed MRS in the anterior insula using PRESS.

Although quality measures are acceptable, I sometimes notice a drift in the spectrum (see figure) attached. What could be causing this? And is this problematic? Are there suggestions to improve this?

Thanks in advance for your answer

Hi @Koen_Cuypers,

sorry, this one dropped off my radar.

At what rate is this happening in your datasets? From what I can see in the box at the top the model is trying to do a lot of ph1 correction. I think this is introducing the behavior.

Would you be able to share this dataset?