Table 5. T2 values for discs at different Pfirrmann grades.
| Grade | T2 values (Mean±SD, ms) | |||
| N | AAF | NP | PAF | |
| I | 79 | 32.14±5.15* @ | 72.25±10.87@ | 34.92±3.90* @ |
| II | 145 | 30.73±4.25* @ | 59.36±11.00* | 34.21±4.82* @ |
| III | 123 | 31.62±5.33* @ | 51.73±6.33* @ | 34.54±3.98* @ |
| IV | 3 | 22.41 | 36.72 | 23.28 |
| P value | — | >0.05 | <0.000 | >0.05 |
| Total | 350 | 31.32±4.84 | 59.03±11.94 | 34.46±4.36 |
*
Compared with T2 values of nucleus pulposus (NP) of grade I, P<0.05;
@Compared with T2 values of NP of grade II. P value: compared with each anterior anulus fibrosus (AAF), NP and posterior anulus fibrosus (PAF) among grade I, II, and III.