TABLE I.
Details of Datasets
| Dataset | Subjects | Age | GOLD (1/2/3/4) | Smoking (c/f/n) | Scanner | Resolution (mm) | Exposure | Reconstruction |
|---|---|---|---|---|---|---|---|---|
| DLCST | 300 + | 59 [50,71] | 69/28/2/0 | 77/23/0 | Philips | 0.72 × 0.72 × 1 to | 40 mAs | Philips D |
| 300 − | 57 [49, 69] | 74/26/0 | 16 rows Mx 8000 | 0.78 × 0.78 × 1 | hard | |||
| COPDGene1 | 74 + | 64 [45, 80] | 21/18/19/16 | 17/57/0 | Siemens | 0.65 × 0.65 × 0.75 | 200 mAs | B45f sharp |
| 46 − | 59 [45, 78] | 23/20/3 | Definition | |||||
| COPDGene2 | 42 + | 65 [45, 78] | 9/13/7/13 | 12/30/0 | Siemens | 0.65 × 0.65 × 0.75 | 200 mAs | B45f sharp |
| 25 − | 60 [47, 78] | 9/11/5 | Definition AS+ | |||||
| Frederikshavn | 8 + | 66 [48, 77] | 1/3/3/1 | 1/7/0 | Siemens | 0.58 × 0.58 × 0.6 | 95 mAs | I70f very sharp |
| 8 − | 56 [25, 73] | 1/2/5 | Definition Flash |
Note: For subjects, + = COPD, − = non-COPD. Ages reported as mean [min, max], rounded to nearest integer. GOLD refers to the COPD grade as defined by the Global Initiative for Chronic Obstructive Lung Disease. For smoking status, c = current, f = former, n = never.