Contrast Values of Targets Inserted in MCAT Phantom
| Fraction-found | 0.1 | 0.3 | 0.5 | 0.7 | 0.9 |
|---|---|---|---|---|---|
| Lungs | 7 (21) | 8.5 (26) | 9.5 (26) | 11 (26) | 13 (22) |
| Liver | 3.75 (26) | 4.25 (28) | 4.75 (32) | 5.5 (28) | 6.25 (26) |
| Soft tissue | 7 (15) | 9.5 (13) | 11 (23) | 12 (18) | 12.5 (20) |
Numbers in parentheses refer to actual numbers of targets per contrast used in final observer study.