The application of hybrid-pencil beam in electron dose calculation
混合笔束模型在电子剂量算法中的应用

Hybrid\|pencil beam model(HPBM),which has been obtained by embedding the bipartition model into Fermi\|Eyges multiple\|scattering theory,shows the potential broad prospect in clinic because of the good calculation accuracy and efficiency.In this paper,we improve the HPBM on calculating the lateral parameter of HPBM,and at the same time, we consider the spectrum of the incident electron beam.Using the improved HPBM,we have calculated the dose distribution for collimated electron beams and compared them with experimental data.The comparison shows that the calculation results agree well with the measurement data.And,the improved HPBM spends much less calculation time.