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Signal intensity of ROIs in sodium images
Untreated 48 Hours 1 Week 1 Month
Tumor (mean) 22.85 (SD, 2.61) 24.19 (SD, 2.45) 22.28 (SD, 0.27) 36.08 (SD, 0.12)
CSF (mean) 23.23 (SD, 7.56) 24.43 (SD, 2.66) 27.53 (SD, 0.33) 25.92 (SD, 0.26)
Ratio 0.98 0.99 0.80 1.39

	Untreated	48 Hours	1 Week	1 Month
Tumor (mean)	22.85 (SD, 2.61)	24.19 (SD, 2.45)	22.28 (SD, 0.27)	36.08 (SD, 0.12)
CSF (mean)	23.23 (SD, 7.56)	24.43 (SD, 2.66)	27.53 (SD, 0.33)	25.92 (SD, 0.26)
Ratio	0.98	0.99	0.80	1.39