A RADIATION DOSE CONTROL DEVICE FOR CONTROLLING AN ELECTRON BEAM PULSE DELIVERED DURING IORT

摘要

A radiation dose control device for controlling an electron beam pulse delivered during a therapy session of IORT (Intra-Operative Radiation Therapy), comprising a PWM system configured to provide an electron injection at a DC voltage at each pulse of an input electron beam (FE) sent to the input of an electronic gun (G) of a linear accelerator or linac (AL), so that the output electron beam (FU) exiting said linac (AL) is highly stable, and so that a variation of the radiation dose of said output electron beam (FU) results only from the variation of the delivery time of said input electron beam (FE); said dose variation of the output electron beam (FU) is thus directly proportional to said delivery time of the input electron beam (FE).