Fig 3. Disc degenerative grading from grade I to grade V.
A: Disc degenerative grading by T2-weighted MRI. B: Disc degeneration graded by homogeneity of the nucleus pulposus, demarcation between the nucleus pulposus and annulus fibrosus, intensity of the nucleus pulposus, and disc height. NP: Nucleus pulposus. AF: Annulus fibrosus.