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The grading system for cervical intervertebral disc degeneration
| Grade | Nucleus signal intensity | Disc height | Structure of FSU |
|---|---|---|---|
| 1 | Hyperintense | Normal | Without disc herniation |
| 2 | Intermediate/hypointense | Normal | With/without disc herniation |
| 3 | Hypointense | Decreased | With disc herniation/osteophyte |
| 4 | Hypointense | Collapsed | With disc herniation/osteophyte |
