射野挡块制作的误差分析和质量保证

目的：探讨影响射野挡块制作的误差因素及完善质量保证和质量控制的方法。方法：结合科室制作射野挡块的实践及射野挡块验证的结果．对不同类型挡块的误差作出分析和评价。结果：由于制作过程及方法的差异性，射野挡块均存在不同程度的误差．每一个制作环节的质量等级都会影响最终的结果。结论：制作人员的技术水平、制作方法的准确性、制作设备的机械精度和制作材料的质量等因素都会对制作结果产生不同程度的影响，只有做好质量控制，完善质量保证体系，才能确保误差最小。

Error Analysis and Quality Assurance of Manufacture on Baffle Plate of Radiation Field

Objective To discuss error factor of the manufacture on baffle plate of radiation field and improve methods of quality assurance and quality control. Methods The errors on different types of baffles were analyzed and evaluated by combining the result of the practice of making baffle and testing of baffle. Results As the difference on the production process and the method of making baffle, there is different degree error on baffle plate of radiation field. The extreme consequence was influenced by quality grate of every manufactured link. Conclusion The technical level of personal, the accuracy of making methods, the equipment precision and the material quality can be produced varying degrees in making. The perfect quality control and quality assurance system can be ensured minimum error.