Treatment / Tomotherapy


Why Tomotherapy ?

The Tomotherapy platform gives clinicians everything they need to deliver the best radiation therapy possible.

The Story

TomoTherapy users have the unique ability to

  • Use daily CT imaging to guide treatment based on patient anatomy for that day, rather than for last week or last month.
  • Customize delivery for each patient, surrounding the target with highly-precise radiation delivered from all angles.
  • Minimize radiation exposure to healthy tissue.
  • If necessary, adapt the treatment plan at any point.

  • About five years ago, the first patient was treated on a TomoTherapy treatment system. Today, thousands will be treated on more than 200 systems installed in centers around the world. This growing community of patients-survivors-is our greatest source of pride and inspiration

    Machine Capabilities

    360° delivery. Conventional machine design allows radiation to be delivered from only a few directions. The TomoTherapy treatment system's linear accelerator (linac) is mounted to a CT scanner-like ring gantry, which means TomoTherapy treatments can be delivered continuously, from all angles around the patient. More beam directions give physicians more control in how they plan treatments-and more assurance that dose will be confined to the tumor, reducing the risk of short- and long-term side effects

    Thousands of targeted beamlets. The TomoTherapy treatment system uses a patented multi-leaf collimator (MLC) that divides the radiation beam into beamlets, all aimed at the tumor. Typically, tens of thousands of beamlets are used in a single TomoTherapy treatment session. Powerful software optimizes the contribution of each one to the total tumor dose, minimizing exposure to healthy tissue

    CTrue™ image guidance for every patient, every day™. Our unique ring gantry design facilitates a 360° delivery pattern. Perhaps even more importantly, it integrates true CT imaging that can be used on a daily basis to guide the accurate delivery of each treatment session. No other radiation therapy machine offers this seamless integration of image-guided and intensity-modulated radiation therapy. No other machine can.

    Source :

    The rest of the story

    For more than 80 years, radiation therapy has been used in cancer care. The primary challenges have remained the same:

  • How can doctors be sure the beam is reaching the tumor as planned ?
  • How can harm to healthy tissue around the tumor be minimized ?

  • Addressing these challenges in newer, better ways has always entailed adapting a design from a different era. In the early 1990s, we had the opportunity to change that with a machine built for the future.