TABLE 1.
Patient and Case Characteristic Distributions
| Parameter | CAD System |
|||||
|---|---|---|---|---|---|---|
| iCAD | R2 | |||||
| Noncancer (n = 150) | Cancer (n = 150) | All (n = 300) | Noncancer (n = 150) | Cancer (n = 150) | All (n = 300) | |
| Age (y) | ||||||
| < 50 | 44 (29.3) | 29 (19.3) | 73 | 38 (25.3) | 26 (17.3) | 64 |
| ≥ 50–64 | 74 (49.3) | 76 (50.7) | 150 | 74 (49.3) | 80 (53.3) | 154 |
| ≥ 65 | 32 (21.3) | 45 (30.0) | 77 | 38 (25.3) | 44 (29.3) | 82 |
| Breast density | ||||||
| Dense | 75 (50.0) | 69 (46.0) | 144 | 77 (51.3) | 75 (50.0) | 152 |
| Fatty | 75 (50.0) | 81 (54.0) | 156 | 73 (48.7) | 75 (50.0) | 148 |
| Menopausal status | ||||||
| Pre- or perimenopausal | 49 (32.7) | 40 (26.7) | 89 | 38 (25.3) | 42 (28.0) | 80 |
| Postmenopausal | 96 (64.0) | 106 (70.7) | 202 | 105 (70.0) | 105 (70.0) | 210 |
| Unknown | 5 (3.3) | 4 (2.7) | 9 | 7 (4.7) | 3 (2.0) | 10 |
| Manufacturer | ||||||
| Fischer | 0 (0) | 0 (0) | 0 | 46 (30.7) | 47 (31.3) | 93 |
| Fuji | 37 (24.7) | 18 (12.0) | 55 | 27 (18.0) | 13 (8.7) | 40 |
| GE | 113 (75.3) | 127 (84.7) | 240 | 76 (50.7) | 86 (57.3) | 162 |
| Lorad-Selenia (Hologic) | 0 (0) | 5 (3.3) | 5 | 1 (0.7) | 4 (2.7) | 5 |
| Digital workup? | ||||||
| No | 138 (92.0) | 65 (43.3) | 203 | 139 (92.7) | 63 (42.0) | 202 |
| Yes | 12 (8.0) | 85 (56.7) | 97 | 11 (7.3) | 87 (58.0) | 98 |
| Histologya | ||||||
| DCIS | 41 (27.3) | 43 (28.7) | ||||
| Invasive cancer | 109 (72.7) | 106 (70.7) | ||||
| Other | 0 (0) | 1 (0.7) | ||||
| Tumor sizea (mm) | ||||||
| ≤ 5 | 17 (11.3) | 17 (11.3) | ||||
| > 5–10 | 29 (19.3) | 26 (17.3) | ||||
| > 10 | 70 (46.7) | 66 (44.0) | ||||
| Unknown | 34 (22.7) | 41 (27.3) | ||||
| Lesion typea | ||||||
| Mass | 65 (43.3) | 65 (43.3) | ||||
| Asymmetric density | 10 (6.7) | 7 (4.7) | ||||
| Calcification | 52 (34.7) | 48 (32.0) | ||||
| Architectural distortion | 8 (5.3) | 11 (7.3) | ||||
| Unknown | 15 (10.0) | 19 (12.7) | ||||
Note—Data shown are number of cases with percentages in parentheses. CAD = computer-aided detection, iCAD = SecondLook CAD system (version 1.4, iCAD), R2 = ImageChecker Cenova CAD system (version 1.0, Hologic), DCIS = ductal carcinoma in situ.
a
Presented for positive cases when available from pathology reports.