Table 2.

Sensitivity and specificity for each MRI sequence in different zones of prostate gland. In both peripheral zone and overall gland, except for the comparisons between T2W MRI and ADC maps of DW MRI, the four modalities had significantly different sensitivity and specificity (P<0.01), with T2W having the highest sensitivity and MRS having the highest specificity. In the central gland, most of the differences in both sensitivity and specificity were not significant. In anterior peripheral zone & central gland, T2W MRI, ADC maps of DW MRI and DCE MRI had significantly higher sensitivity than MRS (P<0.01).

	Sensitivity				Specificity
	T2W	ADC	MRS	DCE	T2W	ADC	MRS	DCE
Peripheral zone	0.65 (0.04)	0.57 (0.04)	0.17 (0.04)	0.39 (0.05)	0.9 (0.02)	0.93 (0.02)	1 (0)	0.97 (0.01)
Central gland	0.15 (0.08)	0.22 (0.09)	0.08 (0.06)	0.22 (0.09)	1 (0)	0.97 (0.01)	1 (0)	0.99 (0)
Anterior PZ& Central gland	0.38 (0.07)	0.44 (0.07)	0.15 (0.05)	0.31 (0.07)	0.98 (0.01)	0.97 (0.01)	1 (0)	0.99 (0)
Overall gland	0.58 (0.04)	0.53 (0.04)	0.16 (0.04)	0.38 (0.05)	0.93 (0.01)	0.95 (0.01)	1 (0)	0.98 (0.01)