Method of Detection

The initial Method of Detection (MOD) is the first test or sign or symptom that triggered the subsequent workup and recommendation for biopsy.

Why MOD?

  • USA National cancer registries do not include data about how breast cancer was detected.
  • We cannot answer basic questions about how screening impacts outcomes in the USA.
  • The debate over when to start and how often to screen rages on in the USA.
  • Many other nations track screening mammography at the patient level.

MOD Resources

How and Why to MOD (initial Method of Detection)
How to Assign MOD in Diagnostic Reports
MOD One Page Quick Reference
MOD: The Missing Piece in U.S. Cancer Registries

Breast Imaging Resources



Breast imagers, use these informative and instructional resources to provide effective, safe, quality care to patients.

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ACR BI-RADS® Atlas

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The BI-RADS Atlas provides standardized breast imaging findings terminology, report organization, assessment structure and a classification system for mammography, ultrasound and MRI of the breast.

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