Fig. 1
Measurements of ADC values. (a-d) A 50-year-old woman with chronic low back pain. ADC maps (a, c) and corresponding T2 weighted fast spin echo images (b, d) showing MCs at the L4/L5 level. ADC measurements (Avg GY corresponding to mean 10−6 mm2/s) included (a) highest mean ADC value in the MC region (1655 in a 41.8 mm2 ROI) and (c) mean ADC in normal vertebral body marrow (215.9 in a 94 mm2 ROI) and in CSF (3125 in a 41.8 mm2 ROI). Midsagittal images were used for measurements in CSF at the level of the MC and close to the endplate in normal vertebral body marrow near the MC. ADC, apparent diffusion coefficient. MC, Modic change. ROI, region of interest. CSF, cerebrospinal fluid