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Cost analysis of neuroimaging.
| Intervention | Number of scans | Total cost (a) | Positive yield | Total cost of positive yield (b) | Variance (a-b) |
|---|---|---|---|---|---|
| Brain CT | 219 | $406 464 | 8 | $14 848 | $391 616 |
| Brain MRI | 50 | $201 50 | 6 | $24 174 | $177 276 |
| CT+MRI | 269 | $607 914 | 14 | $39 022 | $568 892 |
