北京市327台DR设备性能质量控制检测与分析OACSTPCD

Objective To conduct quality control test on 327 DR equipment in Beijing,analyze the stability of the test data,and enhance the level of DR quality control management.Methods Using the multifunctional dosimeter Unfors Raysafe X2,low contrast test card,spatial resolution test card,and other detection models,the universal and specialized detection items of DR equipment were tested using the detection methods specified in the WS 76-2020 standard,and the stability of equipment performance was analyzed using Minitab 17.0 software.Results The qualification rate of 327 DR equipment quality control tests was 98.17%.The unqualified condition involved three performance indicators,namely the deviation between the light field and the four sides of the irradiation field,response uniformity,and useful beam deviation from perpendicularity.The quality control of most test items were at level Ⅰ,and the quality control of deviation(large focus)of tube voltage indication was at level Ⅲ.Conclusion Through the stability analysis of the performance quality control test data of DR equipment,it is found that the tested equipment still has room for improvement in such important indicators as the deviation between the light field and the four sides of the irradiation field,response uniformity,useful beam deviation from perpendicularity and deviation(large focus)of tube voltage indication.The important results of this study can provide scientific basis and reasonable suggestions for the quality management of DR equipment,provide a guarantee basis for the stable operation of the equipment,and ensure the image diagnosis quality and radiation safety of DR equipment.