Table 2a.
Results of JAFROC study for the microcalcification detection task at the three dose levels (100%, 50%, and 30%). FOM = Figure of Merit; LLF = Lesion Localization Fraction; NLF = Non-Lesion Localization Fraction
| 100%
|
50%
|
30%
|
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Radiologist | FOM | LLF | NLF | FOM | LLF | NLF | FOM | LLF | NLF |
| 1 | 0.916 | 0.78 | 0.06 | 0.717 | 0.42 | 0.22 | 0.469 | 0.15 | 0.36 |
| 2 | 0.902 | 0.83 | 0.30 | 0.648 | 0.53 | 0.62 | 0.362 | 0.22 | 0.94 |
| 3 | 0.948 | 0.85 | 0.22 | 0.650 | 0.53 | 0.58 | 0.294 | 0.17 | 0.90 |
| 4* | 0.966 | 0.85 | 0.26 | 0.649 | 0.56 | 0.42 | 0.396 | 0.15 | 0.54 |
|
| |||||||||
| Means | 0.933 | 0.83 | 0.21 | 0.666 | 0.51 | 0.46 | 0.380 | 0.17 | 0.69 |
*
Radiologist 4 for the microcalcifications was not the same as Radiologist 4 for the masses.