Intra-Operative Radiation Therapy (IORT) is a treatment which allows radiation to be applied to the tissue around the tumor in the operating room itself. It is now a consolidated, well known technique, its efficacy proven by a large number of clinical studies.
The patient is treated immediately after tumor ectomy with a single dose of a few dozen Grays of radiation while still anaesthetized. The emission duration depends on the technology used: from a maximum of 30-40 minutes for technologies with lower penetration levels down to a minimum of 1 minute for methods that use electrons.