Fig. 2From: The correlation between the change of Hounsfield units value and Modic changes in the lumbar vertebral endplateMeasurement of the area ratio of MCs region. a, endplate with MCs; b, locating and measuring the area of MCs region; c, locating and measuring the area of the endplate; d, MCs in sagittal plane; e, locating and measuring the area of MCs in sagittal plane; f, locating and measuring the area of vertebral sagittal plane. The axial area ratio = B/C, the sagittal area ratio = E/FBack to article page