Table 2.

Quantification of imaging parameters for grade II gliomas (n = 7), grade III gliomas (n = 9) and grade IV (n = 23). p-Values from the Wilcoxon test, values of R² with significant p-value from a logistic regression analysis between the grade and the parameters (NS: not significant).

	Grade II (mean ± SD)	Grade III (mean ± SD)	Grade IV (mean ± SD)	Wilcoxon test (p-value)			Logistic regression
				II/III	III/IV	II/IV	R2	p-Value
ADCmean (10−6 mm2/s)	1201 ± 89	1345 ± 130	1176 ± 129	NS	0.013	NS	0.04	NS
ADCmin (10−6 mm2/s)	903 ± 66	962 ± 55	837 ± 71	NS	<0.001	NS	0.15	<0.01
rCBVmean	1.18 ± 0.19	1.11 ± 0.35	1.59 ± 0.43	NS	0.010	0.035	0.15	<0.01
rCBVmax	1.88 ± 0.37	1.77 ± 0.52	2.73 ± 0.68	NS	<0.01	0.013	0.21	<0.001
Cho/Cr	1.41 ± 0.20	3.71 ± 4.04	3.65 ± 1.97	0.03	NS	<0.01	0.03	NS
NAA/Cr	1.15 ± 0.28	0.85 ± 0.40	0.89 ± 0.33	NS	NS	NS	0.01	NS
Cho/NAA	1.18 ± 0.41	4.91 ± 4.66	3.84 ± 2.44	NS	NS	0.021	0.01	NS
FLTmean (g/ml)	0.27 ± 0.09	0.25 ± 0.09	0.61 ± 0.23	NS	<0.001	<0.01	0.36	<0.0001
FLTmax (g/ml)	0.34 ± 0.09	0.33 ± 0.14	1.27 ± 0.56	NS	<0.0001	<0.001	0.5	<0.0001