Table 2.
Advanced Breast Imaging and Image-Guided Biopsy Availability by Facility Characteristic
| Facility Characteristics | Ultrasound | MRI | Ultrasound Guided Biopsy |
MR Guided Biopsy |
Stereotactic Guided Biopsy |
|---|---|---|---|---|---|
| Profit Status* | |||||
| For profit (n=13) | 10 (76.9%) | 4 (30.8%) | 3 (25%) | 1 (8.3%) | 2 (16.7%) |
| Not for profit (n=43) | 32 (74.4%) | 19 (46.3%) | 26 (60.5%) | 15 (34.9%) | 19 (44.2%) |
| Academic Medical Center Status | |||||
| Yes (n=6) | 4 (66.7%) | 4 (66.7%) | 4 (66.7%) | 4 (66.7%) | 4 (66.7%) |
| No (n=67) | 51 (76.1%) | 26 (40%) | 37 (56.1%) | 17 (25.8%) | 24 (36.4%) |
| Radiology Practice Type | |||||
| Multi-specialty breast center (n=21) | 21 (100%) | 17 (81%) | 20 (95.2%) | 15 (71.4%) | 18 (85.7%) |
| Full diagnostic radiology practice (n=40) | 30 (75%) | 13 (34.2%) | 21 (53.8%) | 6 (15.4%) | 10 (25.6%) |
| Radiology practice limited to breast imaging only (n=5) | 3 (60%) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) |
| Non-radiology practice (n=7) | 1 (14.3%) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) |
| Facility Location | |||||
| Hospital or located with hospital (n=47) | 38 (80.9%) | 24 (53.3%) | 35 (74.5%) | 19 (40.4%) | 25 (53.2%) |
| Office, not located with hospital (n=17) | 8 (47.1%) | 3 (17.6%) | 2 (12.5%) | 1 (6.3%) | 1 (6.3%) |
| Other (n=9) | 9 (100%) | 3 (33.3%) | 4 (44.4%) | 1 (11.1%) | 2 (22.2%) |
*
One BCSC registry does not report profit status in order to protect the anonymity of its facilities.
Percentages shown are calculated in rows for each modality. Facilities missing imaging availability information: 2 unknown for MRI and 1 unknown for all modalities of guided biopsy. The availability of ultrasound, MRI, and each modality of guided biopsy differed significantly (p< 0.05) by radiology practice type, and by facility location. Additionally, the availability of MR guided biopsy was significantly higher at academic medical centers than at non-academic facilities (p=0.045). All statistical tests account for clustering within practice.