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Table 2: Mean and SD of the extracted MR imaging parameters between lesion components
NAWM Enhancing Nonenhancing
Tumor Nontumor Tumor Nontumor
nT1WI+Gd 0.010 ± 0.000 0.019 ± 0.005^{^a} 0.013 ± 0.001^{^a} 0.009 ± 0.001^{^b} 0.007 ± 0.001^{^b}
nFLAIR 0.010 ± 0.000 0.017 ± 0.005 0.015 ± 0.004 0.014 ± 0.002^{^b} 0.018 ± 0.003^{^b}
v_p 0.010 ± 0.001 0.054 ± 0.030^{^a} 0.007 ± 0.003^{^a} 0.021 ± 0.005^{^b} 0.004 ± 0.001^{^b}
K^trans 0.001 ± 0.001 0.064 ± 0.037^{^a} 0.006 ± 0.004^{^a} 0.009 ± 0.005^{^b} 0.000 ± 0.000^{^b}
k_ep – 0.016 ± 0.011^{^a} 0.002 ± 0.003^{^a} – –
v_e – 0.012 ± 0.009^{^a} 0.001 ± 0.001^{^a} – –
BAT 1.00 ± 0.20 1.30 ± 0.20 1.20 ± 0.30 1.20 ± 0.20^{^b} 0.90 ± 0.40^{^b}
NAA+NAAG/Cr+PCh 1.52 ± 0.25 1.32 ± 0.70 – 1.35 1.04 ± 0.22
GPC+PCh/Cr+PCh 0.30 ± 0.06 0.70 ± 0.25 – 0.46 0.30 ± 0.05
Note:—NAAG indicates N-acetyl aspartylglutamate; GPC, glycerolphosphocholine; PCho, phosphocholine.
↵a Significant difference (P < .05) between the 2 enhancing components.
↵b Significant difference (P < .05) between the 2 nonenhancing components.