TomoTherapy / Radixact System in India
Quick answer
The TomoTherapy system, now called Radixact, integrates a CT scanner with a linear accelerator in a ring gantry. The beam rotates continuously while the couch moves through the ring. This helical delivery suits long targets. It takes a CT-quality image before each session for alignment.
Medically reviewed by The Curaventa Team · Last updated 2026-10-24
What it does
- Delivers radiation in a spiral pattern around the patient.
- Uses binary multileaf collimators to modulate intensity.
- Images daily with megavoltage CT.
- Newer versions add motion tracking.
Procedures it is used for
- Craniospinal and total marrow irradiation.
- Head and neck cancers.
- Multiple metastases in one plan.
- Breast and pelvic cancers.
Benefits and limits
- Good for long or multiple targets.
- Daily imaging adds a few minutes.
- Low-dose spread to larger volumes can occur.
- Fewer centres than conventional linacs.
Hospitals with this technology
- BLK-Max Super Speciality HospitalDelhi NCR
- Kokilaben Dhirubhai Ambani Hospital & Medical Research InstituteMumbai
- Apollo Health City, Jubilee HillsHyderabad
- Tata Medical CenterKolkata
- HCG Aastha Cancer CentreAhmedabad
- Rajiv Gandhi Cancer Institute & Research CentreDelhi NCR
- HCG Cancer Hospital, K. R. Road, BengaluruBengaluru
- Basavatarakam Indo American Cancer Hospital & Research InstituteHyderabad
- HCG Cancer Hospital, Kolkata (New Town)Kolkata
- HCG Cancer Hospital, Borivali, MumbaiMumbai
Frequently asked questions
Why does the couch move during treatment?
The helical design treats a long area by moving you slowly through the rotating beam.
Is the daily CT extra radiation?
It adds a small dose. Doctors consider it worthwhile for accuracy.
What is the difference between TomoTherapy and Radixact?
Radixact is the newer generation of the same platform.
Medically reviewed by The Curaventa Team. Last updated 2026-10-24. General information, not medical advice. Medical editorial board · Editorial policy · How we get prices
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