The research of a new automatic inverse optimal solution based on VMAT model

VernacularTitle:基于容积调强弧形技术模型的全自动逆向优化方案的设计及应用
Author: Jianjian QIU ; Jun ZHAO ; Jiayuan PENG ; Saiquan LU ; Zhiyong XU
Publication Type:Journal Article
Keywords: Intensity-modulated radiation therapy; Volumetric modulated Arc therapy; Optimization; Adaptive optimization program
From: Chinese Journal of Radiological Medicine and Protection 2013;33(5):497-500
CountryChina
Language:Chinese
Abstract: Objective To investigate a new automatic inverse optimal solution based on VMAT optimization model and verify its result.Methods A variant of the new automatic inverse optimal solution was proposed in this study,which provided a solution to calculate treatment plan with the minimized number of beams and the minimized levels of their intensities on the basis of VMAT optimization model by customized software tools.The verifications were evaluated on the simulated head-neck phantom by dosimetric parameters.Results Compared with conventional IMRT/VMAT treatment plans,the adaptive optimization program(AOP)plan showed that plan20/40(20 fields with totally 40 sub-fields,m=2)made the best achievement and it was clinicable.Conclusions The proposed new optimization technique provides an effective way to reach an inverse treatment plan with the best compromise and less sub-fields compared with IMRT/VMAT plans.