TomoTherapy

TomoTherapy is an image-guided radiotherapy system that delivers radiation in a continuous spiral as the treatment ring rotates around the patient, much like a CT scanner. Built-in CT imaging lets the radiation oncology team confirm the tumour's exact position before every session, and the beam is divided into many small beamlets that paint the dose precisely onto the target. This slice-by-slice approach is well suited to complex or unusually shaped tumours and to large or long treatment areas, while keeping nearby healthy organs better protected.