Table 5. Signal intensities for different lesion categories.

Variable	Signal intensities, median (Q1–Q3)
	Low risk	Intermediate/high risk
ADC	1.01 (0.87–1.2)	0.79 (0.6–0.88)
R1	1.11 (0.81–1.24)	0.77 (0.62–0.91)
R2	0.96 (0.71–1.1)	0.7 (0.56–0.78)
R3	0.85 (0.6–1)	0.63 (0.49–0.73)

ADC, apparent diffusion coefficient; R1, DWI ratio image of b100/b1,000; R2, DWI ratio image of b100/b1,500; R3, DWI ratio image of b100/b2,000; DWI, diffusion-weighted imaging.