- H. Iwase
- Rad. Prot. Dosim., 126 (1-4) :615- 618
The ALLEGRO European project aims to give a unified and consistent description as well as recommendations to be applied in estimating the risk of radiation therapy to the healthy tissue. For a complete description of radiation field, neutrons and photons are also to be considered and their dose needs to be estimated. In the target region the dose contribution of these neutral particles remains rather low and gives only a very small correction to the dose delivered by charged particles. In the surrounding healthy tissue, where contributions from charged particles are very low, the relative contribution from the neutrons may become significant. The project thus aims at the estimation of the neutron contribution in the non-target regions.