【摘要】 目的 对双能X射线骨密度仪（Dual-Energy X-Ray Absorptiometry,DXA）进行质量控制检测，探讨DXA设备的质量控制检测与质量管理方法。方法 使用美国GE-Lunar公司生产的DXA设备质量保证（Quality Assurance,QA）模块和脊椎模型，对DXA设备进行准确度误差和精确度误差的质量控制检测，并使用Minitab质量管理统计软件进行质量管理。结果 DXA设备检测QA模块高、中、低骨密度（Bone Mineral Density,BMD）的准确度误差绝对值分别为0.10%、0.10%、0.40%，精确度误差分别为0.70%、0.70%、0.80%;DXA设备检测QA模块高、中、低BMD的休哈特（Shewhart）质量控制图上各检测点均在基线附近随机波动，均未偏离Shewhart法则；DXA设备检测脊椎模体L₁～L₄:BMD、骨矿物质含量、面积的累积和质量控制图上各标绘点均在中心线附近随机波动，且所有累积和线均在上下控制界限内。结论 通过对DXA设备进行定期质量控制检测和质量管理，可实时掌握设备的工作状态，为临床及科研工作提供准确、可靠的检测结果。更多还原

【Abstract】 Objective To detect the quality control of dual-energy X-ray absorptiometry(DXA),and to discuss the quality control detection and quality management methods of DXA equipment.Methods Quality assurance(QA) module and spine phantom of DXA equipment produced by GE-Lunar Company were used to test the accuracy and precision errors of DXA equipment,and Minitab quality management statistical software was used for quality management.Results The absolute value of accuracy error of DXA equipment of high,medium and low bone mineral density(BMD) was 0.10%,0.10% and 0.40% respectively,and the precision error was 0.70%,0.70% and 0.80% respectively.The values of Shewhart quality control chart of high,medium and low BMD measured by DXA equipment fluctuated randomly near the baseline,and did not deviate from Shewhart rule.The cumulative sum quality control chart of BMD,bone mineral content and area were measured by DXA equipment on the water phantom of spine from L1 to L4.The plotted points on the quality control chart fluctuated randomly near the center line,and all cumulative sum lines were within the upper and lower control limits.Conclusion Through regular quality control testing and quality management of DXA equipment,the working status of the equipment can be grasped in real time,and accurate and reliable test results can be provided for clinical and scientific research work.更多还原