Application of PHITS-based biological dose estimation method to the treatment planning of charged-particle therapy

Sato, Tatsuhiko   ; Kase, Yuki*; Watanabe, Ritsuko; Niita, Koji*; Sihver, L.*

We have established a new method for simultaneously estimating biological doses and dose equivalents inside the whole human body, using the particle and heavy ion transport code system PHITS. The detailed procedures for establishing this dose-estimation method were described elsewhere. At the meeting, we will thus focus on its applicability to the treatment planning of charged-particle therapy, showing the calculated results of biological doses and dose equivalents in several tissues for various irradiation conditions by changing the incident particle charges and energies, the structure of upstream apparatuses, and tumor locations.