介入放射X射线机的辐射防护性能检测与分析

Detection and Analysis of Radiation Protection Property of Interventional Radiology X ray Machine

目的检测和分析介入放射X射线机辐射的防护水平,对机房内工作人员防护区剂量水平进行研究。方法于2012年6月—2013年9月以《医用X射线诊断卫生防护监测规范》为参考依据。结果通过对介入放射X射线机进行研究发现,其有用线束入射体表空气的比释动能率的平均数值为9.6 m Gy/min,X射线源组件发生泄露辐射的平均数值是38 LGy/h,而防护区的空气比释动能率的平均数值是110 LGy/h。结论在透视的状态下,有用线束的输出量可以通过脉冲透视进行降低,而且还能降低工作人员防护区的空气比释动能率,因此在进行介入放射X射线机操作时,应该制定出相关的辐射防护监测技术标准方法。

Objective The level of protection of interventional radiology interventional radiation X ray machine were detected and analysed ,and the dose of the staff in protected zone is studied. Methods In 2012 June to 2013 September Use ＂Medical X - ray diagnosis of radiological protection monitoring specification＂ for reference. Results Through the study of interventional X ray ma- chine, the average of its usefulness harness entrance surface air ratio numerical kinetic rate is 9.6 mGy/min, that of value X ray source that has leaked radiation 38 LGy/h, and the protection zone of the air numerical release kinetic energy 110 LGy/h. Conclusion In the perspective of the state, through the pulse fluoroscopy the output of useful harness and the protection zone of the air numerical release kinetic energy can be both reduced , so technical standards for radiation protection monitoring methods related should be developed.