Head CT findings and indications
| No (%) | |
| Total no of scans | 520 (100) |
| Head CT indications | |
| Low risk (altered mental status) | 408 (78.5) |
| High risk | 112 (21.5) |
| Fall, trauma or syncope | 67 (12.9) |
| Focal neurological deficit(s) | 28 (5.4) |
| Headache | 9 (1.7) |
| Others | 6 (1.2) |
| Head CT findings | |
| Acute intracranial abnormality | 13 (2.5) |
| Acute ischaemic stroke | 7 (1.3) |
| Haemorrhagic stroke | 2 (0.4) |
| Subdural haemorrhage | 4 (0.8) |
| Focal neurological deficits | |
| By type: | |
| Seizure | 14 (2.7) |
| Speech deficits | 6 (1.2) |
| Motor deficits | 3 (0.6) |
| Visual deficits | 2 (0.4) |
| Combination of more than one deficit | 2 (0.4) |
| Sensory deficits | 1 (0.2) |