Varian Medical Systems

The dominant radiation-oncology OEM globally. Varian defined modern linear accelerator therapy — most refurbished linacs worldwide carry the Varian name.

Company history

• 1948 — Varian Associates founded by Russell and Sigurd Varian (klystron inventors).
• 1999 — medical business spun off as Varian Medical Systems.
• 2004 — Clinac iX released.
• 2010 — TrueBeam released.
• 2017 — Halcyon released.
• April 2021 — acquired by Siemens Healthineers.

Product line

• Linear accelerators — Clinac iX (legacy), Trilogy, TrueBeam (current), Edge (SRS), Halcyon (ring gantry)
• Proton therapy — ProBeam
• Brachytherapy — GammaMed Plus HDR
• Oncology software — ARIA (OIS), Eclipse (TPS)

Market position

Dominant in radiation oncology. Post-Siemens acquisition, Varian + Siemens Healthineers = single entity spanning diagnostic imaging + therapy.