Table 2. Distribution of shapes of High Intensity Zones at lumbar levels (n: 814 subjects).
| Disc level | Posterior round, n (%) | Posterior fissure, n (%) | Posterior vertical, n (%) | Anterior round, n (%) | Anterior rim, n (%) | Anterior enlarged, n (%) |
|---|---|---|---|---|---|---|
| L1/L2 | 6 (4.0) | 0 (0) | 0 (0) | 11 (7.5) | 2 (3.7) | 0 (0) |
| L2/L3 | 9 (6.0) | 0 (0) | 4 (6.2) | 42 (28.8) | 5 (9.3) | 0 (0) |
| L3/L4 | 16 (10.6) | 0 (0) | 6 (9.2) | 61 (41.8) | 21 (38.9) | 6 (40.0) |
| L4/L5 | 49 (32.5) | 3 (42.9) | 24 (36.9) | 20 (13.7) | 17 (30.9) | 8 (53.3) |
| L5/S1 | 71 (47.0) | 4 (57.1) | 31 (47.7) | 12 (8.2) | 9 (16.4) | 1 (6.7) |
| Total | 151(100) | 7 (100) | 65 (100) | 146 (100) | 54 (100) | 15 (100) |
Note, every disc level from L1/L2 to L5/S1 has been individually evaluated.