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Table 1 Features selected for the Infarct Evolution Classifier, and the metabolites tentatively assigned to those features

From: Brain metabolic pattern analysis using a magnetic resonance spectra classification software in experimental stroke

Feature selection order number Feature chemical shift (ppm) Assigned metabolite Non-infarcted parenchyma* Acute phase post-stroke* Subacute phase post-stroke* p value
1 1.33 Lac + ML(–CH2) 2.78 (2.38–3.21) 7.39 (6.67–8.90) 19.88 (10.38–22.11) p < 0.01
2 3.05 TCr 3.83 (3.42–4.18) 1.96 (1.63–2.36) 2.01 (1.62–2.31) p < 0.01
3 0.85 ML(–CH3) 3.32 (3.09–3.95) 3.02 (2.33–4.27) 12.30 (8.39–15.52) p < 0.01
  1. * Median (interquartile range) of UL2CA normalized peak height values for each feature in the training set
  2. p value resulting from the Kruskall–Wallis test of the comparison of the selected feature among the three classes of the training set