Table 2.

The main MRS analysed parameters of tumor and normal voxels

Parameter	Statistical Information	Tumor Voxel (n = 170)	Normal Voxel (n = 205)	p-value
Creatine (Cr)	Mean±SD	45243.8±40989.9	56784.1±25570.4	0.005
Phosphocholine (Pcho)	Median (IQR)	62577.9 (37197.7–78336.9)	52713(35942.1–70079.7)	NS
	Range	383–382873	3145–188266
Glutamic Acid (Glu)	Median (IQR)	13597 (9052.4–24418.5)	18002.6 (9811.4–33567.7)	0.030
	Range	1089–152550	2750–98338
Glutamine (Gln)	Median (IQR)	10588.4 (3343.03–19059.5)	6886.6 (4034.05–12181.6)	0.037
	Range	2–142141	379–71261
Glycine (Gly)	Median (IQR)	11248 (5406.1–19704.3)	8065.3 (4565.7–12307.8)	0.001
	Range	310–747186	272–78921
Gln/Glu Ratio	Median (IQR)	0.43 (0.24–1.21)	0.30 (0.17–0.79)	0.024
	Range	0.00–8.85	0.00–6.33
Lactate (Lac)	Median (IQR)	8433.90 (4092.6–12953)	7113.60 (3294.8–15763)	NS
	Range	270–85124	190–77207
Lac/Crea Ratio	Median (IQR)	0.15 (0.08–0.37)	0.12 (0.05–0.25)	0.01
	Range	0.01–9.09	0.01–1.72
Pcho/Crea Ratio	Median (IQR)	1.58 (1.18–2.39)	0.94 (0.74–1.17)	<0.001
	Range	0.04–7.34	0.31–2.82
N-Acetylaspartate (NAA)	Median (IQR)	28954 (12760–57837)	57739.8 (28379.4–77123)	<0.001
	Range	2067–98759	2010–124864
Pcho/NAA Ratio	Median (IQR)	1.95 (1.21–4.93)	0.93 (0.67–1.32)	<0.001
	Range	0.01–30.92	0.16–29.29
Lac/NAA Ratio	Median (IQR)	0.21 (0.11–0.52)	0.13 (0.05–0.25)	<0.001
	Range	0.01–6.41	0.01–1.88
N-Acetylaspartylglutamic acid (NAAG)	Median (IQR)	22160.7 (13330.5–44833)	50257.7 (28116–69125.1)	<0.001
	Range	1900–193971	865–130222
Taurine (Tau)	Median (IQR)	7144.4 (3408.4–12455.7)	4911.05 (2635.6–6744.3)	<0.001
	Range	447–272522	51–32593
Gly/Tau Ratio	Median (IQR)	1.21 (0.81–2.18)	1.85 (1.16–3.85)	0.041
	Range	0.31–102.66	0.08–70.86

NS: Nonsignificant.