Table 2.

Sensitivity and specificity of imaging parameters with high predictive power (p < 0.20, Wald test) in differentiation of glioblastomas from brain metastases using receiver operating characteristic curve analysis

Parameter	ROI	Cutoff value	Sensitivity	Specificity	AUC
CE T1	CR	0.84	0.42	0.24	0.33
	ER	1.42	0.58	0.44	0.39
ADC(10−3mm2/s)	ER	1.07	0.55	0.48	0.57
FA	CR	0.10	0.71	0.68	0.72
	ER	0.11	0.89	0.80	0.90
	IPR	0.16	0.66	0.76	0.74
	DPR	0.17	0.68	0.60	0.63
CL	CR	0.10	0.47	0.88	0.71
	ER	0.09	0.84	0.84	0.90
	IPR	0.13	0.66	0.76	0.76
CP	CR	0.05	0.92	0.36	0.66
	ER	0.09	0.90	0.64	0.80
	IPR	0.12	0.76	0.52	0.66
	DPR	0.10	0.78	0.48	0.63

Note - CE T1: contrast-enhanced T1 AUC: area under the curve

CR: central region.

ER: enhancing region.

IPR: immediate peritumoral region

DPR: distant peritumoral region