Variations and Challenges to Performing Outside Study Interpretations in Breast Imaging: A National Survey of the Society of Breast Imaging Membership

Objective: Second-opinion interpretations of outside facility breast imaging provide value-added care but are operationally challenging for breast radiologists. Our objective was to survey members of the Society of Breast Imaging (SBI) to assess practice patterns and perceived barriers to performing outside study interpretations (OSIs). Methods: An anonymous survey was developed by the Patient Care and Delivery Committee of the SBI and distributed via e-mail to SBI radiologist members. Survey questions included practice demographics and OSI volumes, billing practices, clinical scenarios, and imaging modalities, logistics, and barriers. Responses were aggregated and comparisons were made by univariate analysis using likelihood ratio tests, t-tests, and Spearman's rank correlation tests as appropriate. Ordinal or nominal logistic modeling and linear regression modeling was also performed. Results: There were 371 responses (response rate of 13%). Most respondents practice at an affiliated specialty breast care center (306/371, 83%) and said their practice performed OSIs (256/371, 69%). Academic practices reported the highest OSI volumes (median 75 per month) and were most likely to indicate increases in OSI volumes over time (100/144, 69%). The most common indication for OSI was second opinion for a biopsy recommendation (245/256, 96%). Most practices provide a final BI-RADS assessment (183/261, 70%). The most cited barrier to performing OSIs was physician time constraints (252/369, 68%). Conclusion: Breast imaging OSI practice patterns are variable among SBI members with notable differences by practice setting and multiple barriers identified. More unified guidelines and recommendations may be needed for radiologists to better perform this valuable task.