Overview of MRI findings (n)
| Within normal limits | 542 |
| Cerebrovascular disorders | 326 |
| Aneurysm | 8 |
| Carotid dissection or occlusion | 12 |
| Cavernous malformation | 19 |
| Cerebral contusions | 4 |
| Cortical infarction | 89 |
| Developmental venous anomaly | 29 |
| Lacunar infarction | 133 |
| Intracerebral haemorrhage | 15 |
| Cerebral venous sinus thrombosis | 5 |
| Subarachnoid haemorrhage | 3 |
| Subdural haematoma or hygroma | 6 |
| Other | 3 |
| White matter and neurodegenerative disorders | 1143 |
| Atrophy | 285 |
| Basal ganglia disorders | 12 |
| Hydrocefalus | 20 |
| Marked perivascular spaces | 37 |
| Possibly inflammatory white matter changes | 356 |
| Unspecific or degenerative white matter changes | 433 |
| Infectious, inflammatory and metabolic disorders | 88 |
| Cerebral abscess | 7 |
| Congenital metabolic disorders | 4 |
| Encephalitis | 10 |
| Meningitis | 15 |
| Optical neuritis | 37 |
| Vasculitis | 4 |
| Other | 11 |
| Neoplasms | 311 |
| Acoustic neuroma | 19 |
| Glioma | 21 |
| Meningioma | 44 |
| Metastasis | 18 |
| Pituitary adenoma | 31 |
| Unspecified or other type of neoplasm | 46 |
| Cysts and malformations | 74 |
| Arachnoid cyst | 24 |
| Empty sella | 9 |
| Malformation or dysplasia | 16 |
| Parenchymal cyst | 5 |
| Pineal cyst | 13 |
| Pituitary cyst | 7 |
| Sinonasal and orbital disorders | 191 |
| Sinusitis | 164 |
| Mastoiditis | 23 |
| Other | 4 |