Table 2. Modic changes, associated ADC values and Pfirrmann grades.

	Modic 1 (n = 9)	Modic 2 (n = 51)	pU value
ADC value at the corresponding bone marrow area, x 10−6 mm2/s	498±139	223±110	< 0.001
ADC value from the nearest disk, x10-6 mm2/s	1088±457	1091±397	0.82
Pfirrmann grades from the nearest disk			0.17
Grade 3, n	1	14
Grade 4, n	4	26
Grade 5, n	4	11

ADC, apparent diffusion coefficient.