systemHologicMammographyfamily: selenia

Hologic Selenia (original 2D FFDM)

Family: Hologic Selenia · Modality: Mammography

Hologic's original full-field digital mammography (FFDM) platform — the 2D-only predecessor to the Selenia Dimensions tomosynthesis family. Shipped broadly through the 2000s and early 2010s, the Selenia established Hologic's dominant US mammography market position on the basis of the amorphous-selenium (a-Se) direct-conversion detector and defined the clinical reference for FFDM that the Dimensions and 3Dimensions platforms later extended with DBT. Very large global installed base; one of the most common mammography platforms in the current secondary market.

Platform highlights

  • 24 × 29 cm amorphous-selenium (a-Se) direct-conversion detector — the same detector technology family carried forward to Selenia Dimensions and 3Dimensions. Direct conversion eliminates light-diffusion blur from indirect-conversion (CsI + a-Si) approaches.
  • 70 µm pixel pitch — native resolution carried forward across the Hologic mammography lineage.
  • X-ray tube generations:
    • Early production (c.2002–2008) — Molybdenum/Rhodium dual-track tube (Mo target with Rh filter for denser breasts; Mo filter for thinner / fatty breasts).
    • 2008+ units — tungsten bi-angular tube with Rh (0.060 mm) and Ag (0.060 mm) filtration. Tungsten target + Rh/Ag filtration is the current Hologic clinical standard and carried through to Dimensions / 3Dimensions.
  • No tomosynthesis — Selenia is 2D FFDM only. DBT arrived with Selenia Dimensions 3D in 2011.
  • Affirm upright biopsy compatibility — the Affirm biopsy attachment retrofits onto Selenia for upright stereotactic biopsy workflows (within license constraints).

Specs

  • 24 × 29 cm a-Se direct-conversion detector
  • 70 µm pixel pitch
  • Mo/Rh dual-track tube (early units) or W tungsten bi-angular tube (2008+ units)
  • W tube filtration: Rh 0.060 mm + Ag 0.060 mm
  • 2D FFDM only (no tomosynthesis)
  • MQSA-accreditable (MQSA)

Clinical positioning

  • Screening mammography — the dominant 2D-era use case; remains in service at many facilities that have not yet transitioned to DBT.
  • Diagnostic mammography — spot compression, magnification views, additional projections.
  • Non-DBT workflows — where a facility's screening protocol doesn't require tomosynthesis or where DBT reimbursement hasn't driven the capital upgrade.

Market position (secondary / refurb)

  • Very large US and international install base. Selenia remains one of the most-traded mammography platforms in the secondary market.
  • Entry-to-mid refurb capital for a Hologic mammography platform. Tomosynthesis-capable Dimensions / 3Dimensions command premiums over 2D-only Selenia.
  • Tube generation matters at acceptance — Mo/Rh-tube Selenias are older production than tungsten-tube Selenias; tube-type confirmation is a meaningful acceptance-test item.
  • Service ecosystem — Hologic OEM service; multi-vendor mammography service familiar with the Selenia chassis; a-Se detector aftermarket reasonably developed.
  • Upgrade pathway — Selenia Dimensions family is the direct successor; 3Dimensions (Genius 3D) is the current DBT flagship.

Relationship to siblings and successors

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