Helical TomoTherapy and Image Guided Radiation Therapy (IGRT)
Helical TomoTherapy is the newest and most advanced radiation technique available in the world. Thompson Cancer Survival Center is pioneering this technology along with the University of Wisconsin - Madison and several other leading cancer centers in the United States. Thompson was the first facility in the world to treat patients using the Hi-Art Helical TomoTherapy System. The first prostate, breast, lung, head and neck, spine, pediatric and stereotactic radiosurgery patients to undergo TomoTherapy treatments were all treated here. In fact, Thompson has treated more patients using helical TomoTherapy and CT-based image guided radiation therapy than any other facility in the world. TomoTherapy is different from conventional linear accelerators in that conventional linear accelerators only treat tumors from one to nine fixed directions. However, this image-guided, Intensity Modulated radiotherapy system delivers radiation in a spiral pattern around the patient, which allows physicians to precisely target tumors. Like CT scanners, TomoTherapy linear accelerators provide images of patients' internal soft-tissue anatomy. This means that for the first time in the history of radiation oncology, radiation therapy patients can be treated with high precision using daily image-guided treatment set-up.		The first clinical HI-ART system in the world at TCSC. CT imaging and dose reconstruction of a head and neck patient

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