Apart from the most common metabolite ratios as tCho/tNAA and tNAA/tCr, which can be correlated with other institutional data (Table 4), we have also documented Lac + Lip/tCr ratio as a new statistically significant parameter (p = 0.004) for differentiation between GBM relapse and PsP. Here, LCT is linked to glioblastoma.