Accuray TomoTherapy (family)
Helical IMRT linac — 6 MV linear accelerator rotates continuously around the patient while the couch moves through the bore, delivering modulated intensity in a helical fashion. Originated at the University of Wisconsin; commercialized as TomoTherapy Hi-Art, then acquired by Accuray and modernized as Radixact.
Variants
- TomoTherapy Hi-Art — original platform
- Radixact — current generation, faster, Synchrony tracking integration
Shared platform characteristics
- 6 MV linac in a CT-like ring gantry
- Binary MLC (closed / open) — fast switching
- Megavoltage CT imaging for daily IGRT
- Total Marrow Irradiation and long-field treatments are platform-specific strengths