Digirad
U.S. nuclear-medicine specialist — focused on solid-state cardiac SPECT cameras and mobile nuclear-imaging service (cameras delivered to physician offices on a per-day basis). Pioneer in compact solid-state cardiac SPECT alongside Spectrum Dynamics. Corporate ownership has changed multiple times; currently part of Star Equity Holdings / TTG Imaging Solutions.
Company history
- 1985 — founded as Digirad Corporation in California.
- 1990s — establishes solid-state gamma-camera technology.
- 2000s — Cardius series cardiac-dedicated cameras + mobile imaging service grow.
- 2018+ — corporate restructuring; mobile-imaging service business becomes a key revenue line alongside camera sales.
- 2020s — Star Equity Holdings ownership; product line continues.
Product line
Solid-state cardiac SPECT
- Cardius 3 XPO — three-head solid-state cardiac SPECT.
- Cardius X-ACT — solid-state cardiac SPECT with attenuation correction.
- Ergo — open dual-head Anger-camera platform.
Mobile imaging service
- Mobile cardiac imaging — Digirad delivers cameras to cardiology and primary-care offices on per-day contracts; physician-office stress-MPI operates on borrowed imaging capacity rather than capital purchase.
Distinctive technology
- Solid-state cadmium zinc telluride (CZT) detection on Cardius platforms — earlier-generation alternative to NaI Anger-camera technology in cardiac.
- Mobile imaging service model — distinctive go-to-market vs traditional camera-sales OEMs; Digirad's revenue mix includes substantial service / mobile-imaging revenue.
- Three-head Cardius — geometric-detector configuration optimized for cardiac single-photon imaging at lower-dose injected activity.
Market position
Niche in U.S. nuclear cardiology — particularly visible in physician-office mobile-imaging contracts. Smaller share than GE Discovery NM 530c or Spectrum Dynamics D-SPECT in dedicated cardiac CZT installs.
Refurb posture
- Modest refurb supply — Cardius and Ergo turnover in physician-office practices.
- Service-network depth is corporate-restructuring-influenced; verify current OEM coverage on refurb deals.
- Mobile-service contracts are operating-cost rather than capital decisions.