Table 2.
Breast imaging procedures by breast imaging facility, April 2018 to 2020
| Facility A | Facility B | Facility C | Facility D | Facility E | Facility F (control) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2018 | 2019 | 2020 | 2018 | 2019 | 2020 | 2018 | 2019 | 2020 | 2018 | 2019 | 2020 | 2018 | 2019 | 2020 | 2018 | 2019 | 2020 | |
| Screening mammogram | 614 | 695 | 1 | 292 | 317 | 2 | 257 | 545 | 1 | 284 | 362 | 4 | 1022 | 1056 | 97 | 535 | 558 | 135 |
| Diagnostic mammogram | 374 | 348 | 37 | 357 | 331 | 27 | 764 | 815 | 174 | 171 | 202 | 78 | 104 | 147 | 38 | 187 | 271 | 164 |
| Breast ultrasound | 275 | 225 | 32 | 619 | 643 | 48 | 426 | 532 | 138 | 218 | 330 | 60 | 218 | 389 | 89 | 401 | 526 | 246 |
| Breast MRI | 36 | 21 | 7 | 47 | 56 | 7 | 93 | 119 | 47 | 5 | 11 | 4 | 13 | 19 | 3 | NP | NP | 18 |
| Image‐guided breast biopsy | 65 | 51 | 15 | 97 | 141 | 45 | 114 | 129 | 65 | 28 | 29 | 10 | 5 | 12 | 0 | 31 | 34 | 34 |
| Positive (malignant) biopsy | 14 | 21 | 2 | 6 | 17 | 6 | 48 | 39 | 21 | 10 | 9 | 7 | 1 | 4 | 0 | 5 | 6 | 6 |
| Image‐guided presurgical localization | 7 | 9 | 2 | 16 | 16 | 5 | 20 | 17 | 20 | 4 | 3 | 5 | NP | NP | NP | NP | 2 | 2 |
| Total | 1385 | 1370 | 96 | 1434 | 1521 | 140 | 1722 | 2196 | 466 | 720 | 946 | 168 | 1363 | 1627 | 227 | 1159 | 1397 | 605 |
Abbreviation: NP, Procedure not offered at facility.