The global market for breast cancer imaging and biopsy technologies is expected to reach $5.8bn by 2022, a CAGR of 5.9%, driven by innovation technologies and machine-learning tools that serve as "second readers" to help radiologists triage images and find cancers. Many radiologists believe that mammography will remain the most widely used screening tool, but that digital breast tomosynthesis will ultimately become the gold standard. Here's a close look at the overall breast imaging and biopsy market, highlighting different modalities and key players, and offering the real-world use perspective from three radiologists at Kaiser Permanente, San Diego.