Abstract：
【Purpose】 Accurate control of X-ray units and dosimeters and analysis of the uncertainties associated with the accurate measurement of radiation doses are essential for the effective establishment and application of diagnostic reference levels. In this study, the uncertainty of the average glandular dose (AGD) in the quality control of mammography equipment was evaluated in detail, and recommendations were provided to improve the accuracy and safety of radiological practice. 【Methods】 In the uncertainty analysis of the AGD, the relative standard uncertainties in the measurements of the half-value layer, the incident air kerma, and the conversion factor were considered and finally expressed as expanded uncertainties, the intervals of which were clearly defined. 【Results】 From the AGD measurements using two types of dosimeters, it was found that the primary sources of uncertainty are the uncertainty of the calibration factors of the dosimeters and the uncertainty of the conversion factors.【Conclusion】 To reduce uncertainty, the use of regularly calibrated dosimeters is effective and reliable. Two types of dosimeters are commonly used; the results of this study may serve as a reference value for the uncertainty of AGD in quality control in medical facilities.
摘要：
【目的】准确控制X射线装置和剂量计，分析与准确测量辐射剂量相关的不确定性，对于有效建立和应用诊断参考水平至关重要。在这项研究中,对乳腺摄影设备质量控制中平均腺体剂量(AGD)的不确定度进行了详细的评价,并提出建议以提高放射实践的准确性和安全性。【方法】在AGD的不确定度分析中,半值层测量的相对标准不确定度，事件空气克尔马，并考虑了转换因子，最终表示为扩展的不确定因素，其中的间隔是明确界定的。【结果】使用两种类型的剂量计进行AGD测量，发现不确定度的主要来源是剂量计校准因子的不确定度和转换因子的不确定度。【结论】为降低不确定度,使用定期校准的剂量计是有效和可靠的。通常使用两种类型的剂量计；这项研究的结果可以作为AGD在医疗机构质量控制中的不确定性的参考价值。
