基于雷泰医疗多模态智能直线加速器VenusX的验收测试

Acceptance Testing Based on LinaTech Multi-modal Intelligent Linear Accelerator VenusX

目的对雷泰医疗新型推出的医用直线加速器VenusX的各项技术指标进行临床验收测试,评估其临床应用的精确性、有效性及安全性。方法参考国家相关标准规定与方法,对VenusX的辐射安全、机械精度、射束性能及影像系统进行质量检测与评估。结果各项技术指标均符合相关标准要求:辐射安全项目正常有效;等中心大小0.5 mm、机架旋转角度0.3°、数字化光距尺精度1 mm、治疗床旋转角度0.5°、治疗床各方向误差≤1 mm,光栅叶片到位精度和重复性优于标准;剂量稳定性优于相关标准;MV-EPID中心到位精度0.4 mm、到位重复性精度0.2 mm、摆位精度0.5 mm;kV-EPID中心到位精度0.3 mm、到位重复性精度0.2 mm、摆位精度0.1 mm。结论VenusX作为一款国产多模态智能医用直线加速器,各项参数指标优于验收标准,证明其设备安全性、精确性和有效性均符合国家相关标准并满足临床要求。

Objective To evaluate the accuracy,effectiveness and safety of Venusx,a new medical linear accelerator launched by LinaTech Medical,a clinical acceptance test was conducted on the technical indicators.Methods With reference to the relevant national standard regulations and methods,quality inspection and evaluation of radiation safety,mechanical accuracy,beam performance and imaging system of VenusX were conducted.Results All technical indicators meet the requirements of relevant standards:Radiation safety items were normal and effective.The size of the isocenter was 0.5 mm.The rotation angle of the gantry was 0.3°.The accuracy of the digital light distance scale was 1mm.The rotation angle of the treatment couch was 0.5°.The deviation of each direction of the couch was ≤1 mm.The accuracy and repeatability of MLC were better than the standard.The dose stability was better than the relevant standards.The center placement accuracy of MV-EPID was 0.4 mm,the placement repeatability accuracy was 0.2 mm,and the positioning accuracy was 0.5 mm.The center placement accuracy of kV-EPID was 0.3 mm,the placement repeatability accuracy was 0.2 mm,and the positioning accuracy was 0.1 mm.Conclusion As a domestic multimodal intelligent medical linear accelerator,the parameters and indicators of Venus X are better than the acceptance criteria,which proves that the safety,accuracy and effectiveness of the device are in line with relevant national standards and meet clinical requirements.