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Statistics of the number of features extracted and features selected in reviewed radiomic studies
| Classification | Prognostics | Combined | ||||
|---|---|---|---|---|---|---|
| Extracted | Selected | Extracted | Selected | Extracted | Selected | |
| Mean | 646.0 | 9.7 | 566.1 | 8.6 | 614.7 | 9.3 |
| Std | 625.3 | 9.3 | 543.7 | 6.2 | 595.9 | 8.4 |
| Median | 396 | 6 | 440 | 7 | 396 | 6 |
| Range | 24–2969 | 0–50 | 14–2317 | 1–28 | 14–2969 | 0–50 |
Typically, a radiomics study selects less than 10 features despite the fact that many studies extract hundreds of radiomic features before feature selection.
