systemHologicMammographyfamily: selenia-dimensions

Hologic Selenia Dimensions 2D

Family: Selenia Dimensions · Modality: Mammography

Full-field digital mammography (FFDM) configuration of the Dimensions platform — no tomosynthesis license. Hardware-identical to the Selenia Dimensions 3D variant; the difference is licensed software + PMA-approval bundle.

Clinical positioning

Original 2008 Dimensions configuration. 2D-only units today are typically ones that never received the tomo upgrade. Less clinically differentiated than 3D — tomo meaningfully outperforms 2D-only on cancer detection + recall rates, particularly in dense breast tissue. Sites with Dimensions 2D that handle screening volume usually evaluate tomo upgrade cost-benefit at some point.

Upgrade path to 3D

The tomo upgrade is a software + licensing event, not a hardware swap. Hologic offers the upgrade directly. Requires:

  • Tomosynthesis license (PMA-tied)
  • C-View synthesized-2D license (optional, reduces dose)
  • Reconstruction workstation software
  • Physicist re-commissioning

Shared with 3D sibling

  • a-Se detector (24 × 29 cm, 70 μm pixel on newer panels, 140 μm on older)
  • W-target tube, Rh / Ag filtration
  • 70 cm SID
  • Sun Ultra 45 acquisition workstation (legacy workstation platform)
  • Same MQSA accreditation pathway

Specs

  • a-Se flat detector, 24 × 29 cm
  • 70 cm SID
  • W-target tube
  • 2D FFDM only — no tomo license
  • MQSA accreditable
  • No C-View (no tomo projections to synthesize from)

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