The TomoTherapy HI-ART treatment system is a unique, ground-breaking device that is currently available at Princeton Radiation Oncology's Pennsylvania location at St. Mary Regional Cancer Center. TomoTherapy delivers image-guided intensity-modulated radiation therapy (IG-IMRT) using real-time CT scanning technology. 

The TomoTherapy treatment beam is mounted on a CT-scanner ring system that allows radiation therapy to be delivered continuously from all angles while the patient moves through the ring. Using tiny beamlets of radiation from every direction allows our physicians to create treatment plans that focus radiation on the tumor, while limiting dose to healthy tissue. The TomoTherapy device also enables a CT scan to be taken to visualize the tumor prior to treatment ensuring accurate and precise radiation treatment.

This technology permits the radiation oncologists at Princeton Radiation Oncology to offer new advances in treating cancers of the prostate, head and neck, lung, brain, spine, and other previously difficult-to-treat areas.