| MRI results | Cervical spine | Thoracic spine | Lumbar spine | Total |
| Chiari malformation | 2 (0.9%) | 0 | 1 (0.4%) | 3 (1.3%) |
| Kyphosis | 2 (0.9%) | 0 | 1 (0.4%) | 3 (1.3%) |
| Aneuvrysm of jugular vein | 2 (0.9%) | 0 | 0 | 2 (0.9%) |
| Ankylosis spondylitis | 0 | 1 (0.4%) | 1 (0.4%) | 2 (0.9%) |
| Myelitis | 1 (0.4%) | 0 | 1 (0.4%) | 2 (0.9%) |
| Vertebral dislocation | 2 (0.9%) | 0 | 0 | 2 (0.9%) |
| Vertebral abcess | 0 | 1 (0.4%) | 1 (0.4%) | 2 (0.9%) |
| Medullary gliosis | 0 | 1 (0.4%) | 0 | 1 (0.4%) |
| Neurofibromatosis | 1 (0.4%) | 0 | 0 | 1 (0.4%) |
| Meningioma | 1 (0.4%) | 0 | 0 | 1 (0.4%) |
| Lipoma | 0 | 0 | 1 (0.4%) | 1 (0.4%) |
| Astrocytoma | 0 | 0 | 1 (0.4%) | 1 (0.4%) |