Table 3.
Algorithm precision results.
| True positives | False positives | Precision | Average FP/scan | |
|---|---|---|---|---|
| Microbleed positive | ||||
| SWI | 50 | 426 | 0.11 | 9.7 |
| GRE | 56 | 752 | 0.07 | 17.1 |
| Microbleed negative | ||||
| SWI | – | 249 | – | 7.32 |
| GRE | – | 544 | – | 15.4 |
| Follow up | ||||
| SWI | 10 | 160 | 0.06 | 3.64 |
As noted in the methods, microbleed positive participants are those who have at least one microbleed present (identified by two or more raters), and microbleed negative participants are those who have no microbleeds present (agreed by all three raters). False positive (FP) are presented in the final column averaged over the number of images (FP/scan).