tomosynthesis

Digital Breast Tomosynthesis — X-ray tube sweeps an arc (typically 15°) acquiring low-dose projections, reconstructed as thin-slice 3D.

Why it matters to buyers: Clinical standard since 2011 (Hologic PMA). Reduces recall rates vs 2D-only. Tomo licensing is separate from hardware.

Why it matters to engineers: Tube-head positional accuracy is the key calibration. Tomo reconstruction artifacts trace to geometry or software.