Table 1.
Patient characteristics. Distribution of patient tumor characteristics and radiologists’ scoring for semantic features.
| Number of Patients | Total |
|---|---|
| 258 | |
| Sex | |
| Male/Female | 146 (57%)/112 (43%) |
| Median age (year) | 59 (range 30–81) |
| Smoking history | |
| Current or Former/Never | 117 (45%)/141 (55%) |
| Clinical stage | |
| I/II/III/IV | 160 (62%)/23 (9%)/66 (26%)/9 (3%) |
| Histology subtype | |
| Minimally invasive adenocarcinoma | 3 (1%) |
| Acinar predominant | 109 (42%) |
| Lepidic predominant | 60 (23%) |
| Papillary predominant | 20 (8%) |
| Micropapillary predominant | 12 (5%) |
| Solid predominant | 49 (19%) |
| Variants of invasive adenocarcinomas | 5 (2%) |
| Tumor grade | |
| Low/Intermediate/High | 3 (1%)/189 (73%)/66 (26%) |
| CT Scanners | |
| Siemens | |
| Somatom Sensation 64 | 30 (12%) |
| GE scanner | |
| Lightspeed 16/Discovery CT750 HD | 35 (14%)/193(75%) |
| Binary semantic features | |
| Cavitation (score: 0/1) | 106 (41%)/152 (59%) |
| Air Bronchogram (score: 0/1) | 116 (45%)/142 (55%) |
| Calcification (score: 0/1) | 229 (89%)/29(11%) |
| Categorical Semantic features | |
| Texture (score: 1/2/3) | 6 (2%)/68 (26%)/184 (71%) |
| Border definition (score: 1/2/3) | 13 (5%)/178 (69%)/67 (26%) |
| Contour (score: 1/2/3/4) | 17 (7%)/26 (10%)/166 (64%)/49 (19%) |
| Lobulation (score: 1/2/3/4) | 10 (4%)/115 (45%)/102 (40%)/31 (12%) |
| Spiculation (score: 1/2/3) | 63 (24%)/85 (33%)/110 (43%) |
| Concavity (score: 1/2/3) | 9 (4%) /156 (61%)/93 (36%) |