Centro Nacional de Dosimetría (CND), Avda de Campanar, 21, 46009 Valencia Spain.
Centro Nacional de Dosimetría (CND), Avda de Campanar, 21, 46009 Valencia Spain.
Phys Med. 2020 Sep;77:10-17. doi: 10.1016/j.ejmp.2020.07.025. Epub 2020 Aug 4.
Measurements of eye lens dose using over apron dosimeters with a geometric correction factor is an international accepted practice. However, further knowledge regarding geometric correction factors in different contexts is required. The authors studied the correlation between eye lens dose and over apron dosimetry for different medical specialties in eleven hospitals, using a standardized protocol, two independent over apron dosimeters (worn at chest and at neck levels) and a dedicated calibration procedure. The results show good correlation between subjects working on the same medical specialty for 5 specialties: Interventional Radiology, Vascular Surgery, Vascular Radiology, Hemodynamics and Neuroradiology. The geometric correction factors resulting from this study could be used to estimate eye lens dose using over apron dosimeters, which are more comfortable than eye lens dosimeters, as reported by the study subjects, as long as the increased uncertainty of the over apron dosimetry compared to the dedicated eye lens dosimetry is acceptable.
使用带有几何校正因子的围裙式剂量计测量晶状体剂量是国际上公认的做法。然而，在不同的情况下，需要进一步了解几何校正因子的知识。作者研究了在 11 家医院中，使用标准化协议、两个独立的围裙式剂量计（佩戴在胸部和颈部水平）和专门的校准程序，不同医学专业的晶状体剂量与围裙式剂量计之间的相关性。结果表明，在 5 个专业（介入放射学、血管外科、血管放射学、血液动力学和神经放射学）中，从事相同医学专业的研究对象之间存在良好的相关性。只要围裙式剂量计相对于专用晶状体剂量计的不确定性增加是可以接受的，那么本研究得出的几何校正因子就可以用来估计使用围裙式剂量计测量的晶状体剂量，研究对象报告称，围裙式剂量计比晶状体剂量计更舒适。
