How It Works

The Trilogy system is built around an advanced medical linear accelerator, a machine that rotates 360 degrees around the patient to deliver radiotherapy treatments from many angles. The Trilogy accelerator has been enhanced for stereotactic applications that involve delivering higher doses of radiation to smaller areas over a shorter period of time.

The Trilogy system incorporates sophisticated technologies for shaping the radiation beam so that the dose of radiation is limited to the region of abnormality. By changing the beam shape over time while delivering the radiation, doctors achieve very fine control over how, and where, the radiation is administered.

The Trilogy Stereotactic System also incorporates a number of technologies for positioning patients accurately, including:

  • A special X-ray imager that is used to check the patient's position prior to treatment and to monitor the position of the targeted area during treatment.
  • An optical guidance system with infrared cameras that continuously monitor the patient's position to provide therapists with real-time feedback about any changes in a patient's position.
  • A "respiratory gating" technology that coordinates treatment with respiration, to compensate for tumor motion due to the patient's breathing.