# Best Theratronics

Source: https://onco.cc/companies/best-theratronics/  
OnCo record `best-theratronics` (Company). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

Best Theratronics of Ottawa makes cobalt-60 teletherapy machines, the Theratron Equinox, still used where linear accelerators are hard to run and maintain.

## Summary

The Theratron Equinox cobalt-60 unit was cleared by the FDA to MDS Nordion of Ottawa in March 2006 (K053485) in 80 cm and 100 cm configurations and is now sold by Best Theratronics, which also holds clearances for GammaBeam 100 and 500 units (K142219, K150191). OnCo links it to cobalt-60 teletherapy.

## Fields

- Kind: Company
- Last checked: 2026-11-04
- Also known as: Theratronics; Theratron Equinox; MDS Nordion therapy systems
- Tags: machines-wave3
- HQ: Ottawa
- Type: devices
- Website: https://www.theratronics.ca/

## Sources

- Best Theratronics: products: https://www.theratronics.ca/products.html
- FDA 510(k) K053485: Theratron Equinox (9 March 2006): https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm?ID=K053485

## Connected records

- fronts: [Devices & Physical Therapies](https://onco.cc/fronts/devices/), [Radiation Therapy](https://onco.cc/fronts/radiation/)
- technologies: [Cobalt-60 teletherapy](https://onco.cc/technologies/cobalt-60-teletherapy/)
- roadmaps: [Linear accelerator machines: from Clinac to AI-imaging linacs, rings and radiosurgery units](https://onco.cc/roadmaps/linac-machines-roadmap/)

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