Will radiotherapy technicians be irradiated?

Workers engaged in radiation diagnosis and treatment may be exposed to radiation. At present, linear accelerator, cobalt 60 therapeutic machine and afterloading machine are mainly used in radiotherapy, and the radiation sources of staff mainly include the following three types:

1. When the equipment is in normal operation, the main beam or leakage radiation directly penetrates the shielding wall of the machine room.

2. After using high-energy X-ray therapy (energy greater than 10MV), there will be radioactivity in the computer room for a short time, mainly caused by contaminated neutrons. Or when the cobalt 60 and the afterloader are in the storage state, there will be a certain dose of leakage radiation near the storage position. This situation is the most vulnerable situation for radiation therapy workers.

3. The accident exposure was caused by the staff staying in the work room by mistake.