Table 1. Results of the radial symmetry transform after censoring potential microbleed locations per participant.
| Number of microbleeds | Required rating time (minutes) | |||||||
| #TP | #EP | #FP | (mean±sd) | Total | Median | Q1 | Q3 | |
| A | 95 | 4 | 1436 | (20±12) | 70.8 | 0.7 | 0.4 | 1.1 |
| B | 115 | 4 | 3538 | (49±25) | 121.0 | 1.4 | 0.9 | 1.9 |
| C | 124 | 4 | 6891 | (96±44) | 197.5 | 2.2 | 1.9 | 3.3 |
Total number of detected true positives, extra positives, false positives, and total time required to censor the false positives in all participants. Median rating time required by rater 4, with the interquartile range (Q1 and Q3), is shown. In the visual ground truth rating, 148 microbleeds were found in the 72 participants.