Table 2.

Mean ADC (10^–3 mm²/s) and NADC values.

Mean ADCs (10−3 mm2/s) and NADCs	At b = 1000 s/mm2 Mean ± SD	Range	At b = 2000 s/mm2 Mean ± SD	Range
ADC of malignant meningioma	0.64 ± 0.05	0.58–0.72	0.42 ± 0.03	0.38–0.46
ADC of benign meningioma	1.04 ± 0.12	0.78–1.20	0.80 ± 0.07	0.66–0.89
NADC of malignant meningioma	0.81 ± 0.06	0.74–0.91	0.57 ± 0.06	0.52–0.63
NADC of benign meningioma	1.39 ± 0.15	1.02–1.53	1.18 ± 0.11	1.0–1.3