基于国产医用加速器XHA600E容积旋转调强放疗技术的性能测试

Performance Test of Volumetric Modulated Arctherapy Based on Domestic Medical Accelerator XHA600E

目的对国产医用加速器XHA600E机械性能、剂量学特性以及容积旋转调强(Volumetric Modulated Arctherapy,VMAT)模式下的剂量输出及机械精度控制等进行全面检验,评价其临床实施的可行性与可靠性,为国产设备实施VMAT技术提供参考。方法以GB15213-2016、GB9706.1-2007、GB9706.5-2008和AAPM TG142为基础,结合Varian等进口医用加速器实施VMAT技术相关质量控制标准制定检测项目与方法,对XHA600E加速器实施VMAT技术的性能进行全面评估和测试。结果测试结果显示XHA600E在机械性能、剂量学测试以及机架旋转过程中MLC测试等方面指标均达到质控标准。结论国产医用加速器XHA600E在剂量学特性以及相关机械性能方面已初步具备了实施VMAT的技术条件,为下一步开展VMAT技术的临床应用奠定了基础。

Objective The mechanical properties,dosimetric characteristics,dose output and mechanical precision control of domestic medical accelerator XHA600E under volume rotation intensity modulation(VMAT)mode were comprehensively tested to evaluate the feasibility and reliability of its clinical implementation,and to provide reference for domestic equipment to implement VMAT technology.Methods Perform a comprehensive evaluation and testing of the performance of the VMAT technology for XHA600E accelerators based on GB15213-2016,GB 9706.1-2007,GB 9706.5-2008,AAPM TG142 and referring to the related accelerator quality control standards of imported equipment manufacturers such as Varian.Results The test results showed that XHA600E mechanical properties,dosimetry test and MLC test during the rotation of the gantry had reached quality control standards.Conclusion The domestic medical accelerator XHA600E has preliminary technical conditions for implementing VMAT in terms of dosimetric characteristics and related mechanical properties,which lays a foundation for the clinical application of VMAT technology in the next step.