Table 4 Summary of total error, false negative and false positive rates for the three scanner brands, and sub-classification of false positives and false negatives by possible causative factors (with % of the total errors of each type—false positives or false negatives)
Scanner (by manufacturer) | Image set total | Total errors (False positive and false negative) | Error type | Total (% of image set total) | Technical | Missing Specificity/Sensitivity | New/abnormal findings | Unknown |
|---|---|---|---|---|---|---|---|---|
Hamamatsu Photonics | 348 | 11 (3.2%) | False positive | 3 (0.9%) | 2 (66.7%) | 1 (33.3%) | 0 (0%) | 0 (0%) |
False negative | 8 (2.3%) | 0 (0%) | 7 (87.5%) | 1 (12.5%) | 0 (0%) | |||
3D Histech | 447 | 44 (9.8%) | False positive | 40 (8.9%) | 7 (17.5%) | 10 (25%) | 0 (0%) | 23 (57.5%) |
False negative | 4 (0.9%) | 0 (0%) | 4 (100%) | 0 (0%) | 0 (0%) | |||
Philips | 667 | 26 (3.9%) | False positive | 23 (3.45%) | 0 (0%) | 20 (87%) | 3 (13%) | 0 (0%) |
False negative | 3 (0.45%) | 0 (0%) | 3 (100%) | 0 (0%) | 0 (0%) |