Table 2.
T2 Relaxation Time Values (Mean ± SD) for Regions of Interest (ROIs) 1 and 6 (Upper Third of the Table) Representing Annulus Fibrosus Tissue (AF); for the ROIs 2 and 5 (Middle Third of the Table), Representing the Intermediate Zone (IZ); and for the ROIs 3 and 4, Representing Nucleus Pulposus Tissue (NP) Subcategorized by the Segments Th12/L1 to L5/S1 and P Values for the Difference between Adjacent and Nonadjacent Intervertebral Discs.a
| Localization | ROI 1 |
ROI 6 |
||||
|---|---|---|---|---|---|---|
| Adjacent | Nonadjacent | P Value Difference | Adjacent | Nonadjacent | P Value Difference | |
| AF | ||||||
| Th12/L1 | 62.62 ± 51.77 | 45.82 ± 16.36 | 0.005 | 64.76 ± 35.53 | 74.95 ± 80.07 | 0.368 |
| L1/L2 | 52.76 ± 14.77 | 56.91 ± 24.34 | 0.913 | 54.37 ± 22.91 | 56.55 ± 26.14 | 0.097 |
| L2/L3 | 55.35 ± 17.59 | 64.24 ± 38.57 | 0.689 | 45.66 ± 11.13 | 58.35 ± 31.26 | 0.097 |
| L3/L4 | 57.21 ± 32.87 | 69.34 ± 49.43 | 0.065 | 50.38 ± 13.37 | 61.20 ± 43.55 | 0.577 |
| L4/L5 | 53.65 ± 14.78 | 49.80 ± 15.77 | 0.246 | 60.05 ± 17.75 | 55.11 ± 17.62 | 0.282 |
| L5/S1 | 49.36 ± 8.40 | 49.94 ± 20.95 | 0.383 | 64.31 ± 21.69 | 74.12 ± 63.63 | 0.700 |
| ROI 2 |
ROI 5 |
|||||
| Adjacent | Nonadjacent | P Value Difference | Adjacent | Nonadjacent | P Value Difference | |
| IZ | ||||||
| Th12/L1 | 52.82 ± 16.86 | 39.03 ± 7.99 | 0.002 | 58.35 ± 18.17 | 54.96 ± 11.47 | 0.766 |
| L1/L2 | 50.46 ± 10.95 | 61.13 ± 42.24 | 0.000 | 49.67 ± 13.24 | 40.1 ± 13.3 | 0.000 |
| L2/L3 | 43.94 ± 11.56 | 64.44 ± 44.22 | 0.000 | 45.54 ± 9.89 | 60.38 ± 12.93 | 0.000 |
| L3/L4 | 54.86 ± 18.70 | 57.85 ± 15.70 | 0.285 | 47.41 ± 8.01 | 58.04 ± 12.64 | 0.002 |
| L4/L5 | 53.01 ± 12.75 | 53.96 ± 11.62 | 0.547 | 54.58 ± 4.65 | 57.36 ± 9.39 | 0.318 |
| L5/S1 | 56.38 ± 8.40 | 55.72 ± 15.98 | 0.839 | 55.28 ± 16.15 | 64.66 ± 18.59 | 0.128 |
| ROI 3 |
ROI 4 |
|||||
| Adjacent | Nonadjacent | P Value Difference | Adjacent | Nonadjacent | P Value Difference | |
| NP | ||||||
| Th12/L1 | 64.56 ± 30.12 | 55.69 ± 10.82 | 0.457 | 65.09 ± 23.56 | 53.35 ± 14.78 | 0.535 |
| L1/L2 | 60.49 ± 13.88 | 66.07 ± 33.12 | 0.000 | 57.92 ± 12.70 | 62.60 ± 21.72 | 0.000 |
| L2/L3 | 49.13 ± 13.04 | 73.18 ± 33.73 | 0.000 | 52.1 ± 11.67 | 75.63 ± 36.24 | 0.000 |
| L3/L4 | 53.76 ± 9.04 | 67.90 ± 16.57 | 0.002 | 51.92 ± 10.85 | 71.01 ± 24.46 | 0.001 |
| L4/L5 | 55.76 ± 9.13 | 61.71 ± 14.78 | 0.177 | 55.20 ± 7.29 | 62.81 ± 13.71 | 0.063 |
| L5/S1 | 65.83 ± 31.12 | 70.25 ± 29.02 | 0.440 | 56.46 ± 20.06 | 66.38 ± 23.79 | 0.092 |
a
P values ≤0.05 are marked in boldface.