Table 2.
Characteristics of 151 pulmonary nodules needing further evaluation, found by CAD and/or double reading
| Variable | n | Nodules found by | P value | |
|---|---|---|---|---|
| CAD (%) | Double reading (%) | |||
| Location | ||||
| Peripheral | 116 | 112 (96.6) | 94 (81.0) | <0.01 |
| Non-peripheral | 35 | 34 (97.1) | 24 (68.6) | <0.01 |
| Consistency | ||||
| Solid | 146 | 143 (97.9) | 113 (77.4) | <0.001 |
| Non-/part-solid | 5 | 3 (60.0) | 5 (100) | NA |
| Attachment | ||||
| Intraparenchymal | 75 | 73 (97.3) | 65 (86.7) | <0.05 |
| Fissure-attached | 18 | 17 (94.4) | 17 (94.4) | NS |
| Vessel-attached | 29 | 29 (100) | 11 (37.9) | NA |
| Pleural-based | 29 | 27 (93.1) | 25 (86.2) | NS |
| Shape | ||||
| Spherical | 115 | 111 (96.5) | 92 (80.0) | <0.001 |
| Non-spherical | 36 | 35 (97.2) | 26 (72.2) | <0.05 |
| Edge | ||||
| Smooth | 132 | 130 (98.5) | 99 (75.0) | <0.001 |
| Non-smooth | 19 | 16 (84.2) | 19 (100) | NA |
| Volumea (mm3) | ||||
| 50–500 | 141 | 138 (97.9) | 108 (76.6) | <0.001 |
| >500 | 5 | 5 (100) | 5 (100) | NA |
NA not applicable, NS not significantly different
aFor 5 non-/part-solid nodules, volume was not available