Table 2.

Comparison of ADC values for all lesions using both ROI demarcation methods by observer

	ADC measurements (×10−3 mm2/s)
	Large ROI	Small ROI	p*
Observer 1			0.026
Mean	1.19	1.16
Median	1.03	0.99
Minimum	0.69	0.55
Maximum	2.55	2.53
SD	0.39	0.29
Observer 2			0.033
Mean	1.19	1.16
Median	1.12	0.98
Minimum	0.67	0.56
Maximum	2.54	2.53
SD	0.42	0.30

^*Wilcoxon rank test for median ADC values.

ADC, apparent diffusion coefficient; ROI, region of interest; SD, standard deviation.