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Screening MRI in the Breast Cancer Surveillance Consortium (BCSC) generally meets Breast Imaging Reporting and Data System (BI-RADS) performance benchmarks. This study shows MRI

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Area of Science:

  • Radiology
  • Oncology
  • Medical Imaging

Background:

  • Magnetic resonance (MR) imaging is increasingly used for breast cancer screening.
  • Established benchmarks, such as those from the Breast Imaging Reporting and Data System (BI-RADS), are crucial for evaluating screening performance.
  • The Breast Cancer Surveillance Consortium (BCSC) collects real-world data on breast cancer screening.

Purpose of the Study:

  • To compare the performance of screening MR imaging within the BCSC against established BI-RADS benchmarks.
  • To assess key performance metrics including cancer detection rate, positive predictive value, sensitivity, and specificity.

Main Methods:

  • Retrospective analysis of 8387 screening MR examinations from 5343 women in the BCSC (2005-2013).
  • Data linked to SEER and tumor registries to identify cancer cases and characteristics.
  • Performance measures calculated per BI-RADS fifth edition criteria.

Main Results:

  • Cancer Detection Rate (CDR): 17 per 1000 examinations (benchmark: 20-30).
  • Positive Predictive Value (PPV2): 19% (benchmark: 15%).
  • Sensitivity: 81% (benchmark: >80%); Specificity: 83% (benchmark: 85%-90%).

Conclusions:

  • Screening MR imaging performance in the BCSC largely aligns with BI-RADS benchmarks.
  • Performance metrics approach benchmark levels for remaining measures.
  • Real-world data can inform benchmark refinement and quality improvement initiatives.