Fig. 3From: T1ρ, T2 and T2* mapping of lumbar intervertebral disc degeneration: a comparison studyBox plots of the values in nucleus pulposus according to the Pfrrmann grades. A, B and C are T1ρ, T2 and T2* relaxation time of nucleus pulposus versus Pfrrmann grades, respectively. ** P < 0.005Back to article page