Supplementary Table 1.
Correlation between the T1ρ and T2 map values of the nucleus pulposus (NP) and ROIs (the whole or front, middle, back one-third of the upper or lower end plate) in monkeys (A) or humans (B) had been analyzed by Pearson's correlation.
| A. | ||||||||
|---|---|---|---|---|---|---|---|---|
| Monkey T1ρ Pearson r | NP vs. Upper mean | NP vs. UF | NP vs. UM | NP vs. UB | NP vs. lower mean | NP vs. LF | NP vs. LM | NP vs. LB |
| R | 0.08038 | 0.1712 | 0.08953 | 0.2024 | 0.2179 | 0.1366 | 0.1554 | 0.2567 |
| R square | 0.006461 | 0.02931 | 0.008016 | 0.04095 | 0.0475 | 0.01865 | 0.02415 | 0.06592 |
| P value | 0.1912 | 0.0051 | 0.1453 | 0.0009 | 0.0003 | 0.0259 | 0.0112 | <0.0001 |
| P value summary | ns | ∗∗ | ns | ∗∗∗ | ∗∗∗ | ∗ | ∗ | ∗∗∗∗ |
| Significant? (a = 0.05) |
No |
Yes |
No |
Yes |
Yes |
Yes |
Yes |
Yes |
| Monkey T2 map Pearson r |
NP vs. Upper mean |
NP vs. UF |
NP vs. UM |
NP vs. UB |
NP vs. lower mean |
NP vs. LF |
NP vs. LM |
NP vs. LB |
| R | 0.3341 | 0.1836 | 0.3838 | 0.08046 | 0.5597 | 0.2887 | 0.5334 | 0.2606 |
| R square | 0.1116 | 0.03369 | 0.1473 | 0.006474 | 0.3133 | 0.08333 | 0.2845 | 0.06791 |
| P value | <0.0001 | 0.0074 | <0.0001 | 0.2434 | <0.0001 | <0.0001 | <0.0001 | 0.0001 |
| P value summary | ∗∗∗∗ | ∗∗ | ∗∗∗∗ | ns | ∗∗∗∗ | ∗∗∗∗ | ∗∗∗∗ | ∗∗∗ |
| Significant? (a = 0.05) | Yes | Yes | Yes | No | Yes | Yes | Yes | Yes |
| B. | ||||||||
|---|---|---|---|---|---|---|---|---|
| Human T1ρ Pearson r | NP vs. Upper mean | NP vs. UF | NP vs. UM | NP vs. UB | NP vs. Lower mean | NP vs. LF | NP vs. LM | NP vs. LB |
| R | 0.2125 | 0.1743 | 0.304 | −0.04205 | 0.1126 | 0.1836 | 0.05338 | 0.0234 |
| R square | 0.04515 | 0.03037 | 0.09243 | 0.001768 | 0.01268 | 0.03371 | 0.00285 | 0.0005478 |
| P value | 0.0973 | 0.1755 | 0.0163 | 0.7456 | 0.3835 | 0.1532 | 0.6803 | 0.8567 |
| P value summary | ns | ns | ∗ | ns | ns | ns | ns | ns |
| Significant? (a = 0.05) |
No |
No |
Yes |
No |
No |
No |
No |
No |
| Human T2 map Pearson r |
NP vs. Upper mean |
NP vs. UF |
NP vs. UM |
NP vs. UB |
NP vs. Lower mean |
NP vs. LF |
NP vs. LM |
NP vs. LB |
| R | 0.4461 | 0.426 | 0.4721 | 0.2989 | 0.4574 | 0.3123 | 0.5636 | 0.2507 |
| R square | 0.199 | 0.1815 | 0.2229 | 0.08936 | 0.2092 | 0.09755 | 0.3176 | 0.06285 |
| P value | 0.0003 | 0.0006 | 0.0001 | 0.0183 | 0.0002 | 0.0135 | <0.0001 | 0.0494 |
| P value summary | ∗∗∗ | ∗∗∗ | ∗∗∗ | ∗ | ∗∗∗ | ∗ | ∗∗∗∗ | ∗ |
| Significant? (a = 0.05) | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
NP = nucleus pulposus; ROI = region of interest; LB = lower back; LF = lower front; LM = lower middle; UB = upper back; UF = upper front; UM = upper middle. ∗p<0.05, ∗∗p<0.01, ∗∗∗p<0.001, ∗∗∗∗p<0.0001