Tomotherapy begins with a simulation, just like the other external radiation therapy technologies. Once the initial CT or PET/CT scans are complete, your Radiation Oncologist will determine the total dose of radiation that you are to receive.
The system’s powerful computer will then calculate the number and intensity of thousands of tiny radiation “beamlets” for your specific treatment plan.
The main difference between Tomotherapy and traditional IMRT is that Tomotherapy integrates the CT scanner with the IMRT radiation delivery in a single system. The integrated CT scanner is used at each treatment session to ensure that you are correctly positioned on the treatment table and your tumor is precisely targeted.
The radiation “beamlets” are delivered from any point on a 360º circle around the body and precisely sculpt the radiation around the tumor. This effectively treats the disease while minimizing damage to surrounding healthy tissue.