Table 1.
Demographics and selected scanner parameters for the five collections used in our study
| Collection | Scanned at site | No. (males, females) | Mean age (range) | kVp | mA range | Slice thickness range (mm) | Number of slices per study range | Acquisition year (range) |
|---|---|---|---|---|---|---|---|---|
| A | CUMC | N/A (phantom) | N/A (phantom) | 120 | 195 | 1.25 | 237 | 2011 |
| B | LIDC | 10 (gender not available) | not available | 120 | 80–360 | 1.0–2.5 | 166–481 | Not available |
| C | RIDER | 10 (genders unknown) | 58 (44–71) | 120 | Auto (238–439) | 1.25 | 47–186 | 2006–2007 |
| D | MCC | 10 (4, 6) | 67.7 (49, 78) | 120 | (280–545) | 3 | 103–150 | 2000–2009 |
| E | SU | 10 (7, 3) | 65.4 (46, 80) | 120 | Auto (123–751) | 0.625–1.25 | 69–307 | 2008–2010 |