Medical Physics, Hospital Clínico San Carlos, Profesor Martín Lagos sn, 28040 Madrid, Spain.
Fundación para la Investigación del Hospital Clínico San Carlos, Profesor Martín Lagos sn, 28040 Madrid, Spain.
J Radiol Prot. 2022 Feb 23;42(2). doi: 10.1088/1361-6498/ac5187.
It is relevant to estimate the uncertainties in the measurement of eye lens doses from a personal dosimeter over the protective apron without using additional dosimetry near the eyes. Additional dosimetry for interventionists represents a difficulty for routine clinical practice. This study analyses the estimated eye doses from dosimeter values taken at chest level over the apron and their uncertainties. Measurements of(0.07) using optically stimulated luminescence dosimeters located on the chest over the apron and on the glasses (in the inner and outer part of the protection) were taken from ten interventionalists in a university hospital, in the period 2018-2019 during standard clinical practice. For a total sample of 133 interventional procedures included in our study, the ratio between the(0.07) on the glasses (left-outer side) and on the chest over the apron had an average of 0.74, with quartiles of 0.47, 0.64, 0.88. Statistically significant differences were found among operators using the U-Mann-Whitney test. The average transmission factor for the glasses was 0.30, with quartiles of 0.21, 0.25, and 0.32. Different complexity in the procedures, in the quality of the scatter radiation and in the individual operational practices, involve a relevant dispersion in the results for lens dose estimations from the over apron dosimeter. Lens doses may be between a 64% and an 88% of the over apron dosimeter values (using median or 3rd quartile). The use of 88% may be a conservative approach.
从防护围裙上方的个人剂量计估算眼部剂量的不确定性，而无需在眼部附近进行额外的剂量测量是相关的。对于介入放射科医生来说，额外的剂量测量代表了常规临床实践的困难。本研究分析了从围裙上方胸部位置的剂量计值估算的眼部剂量及其不确定性。在 2018 年至 2019 年期间，在一所大学医院的标准临床实践中，对十位介入放射科医生进行了测量，使用放置在围裙上方胸部和眼镜（保护的内、外部分）上的光激励发光剂量计测量了（0.07）。在我们的研究中，共包括 133 例介入手术，眼镜（左侧外部）上的（0.07）与围裙上方胸部的（0.07）比值的平均值为 0.74，四分位数为 0.47、0.64、0.88。使用 U-Mann-Whitney 检验发现操作者之间存在统计学显著差异。眼镜的平均透射因子为 0.30，四分位数为 0.21、0.25 和 0.32。不同的手术复杂性、散射辐射的质量以及个体操作实践会导致从围裙上方剂量计估算的晶状体剂量结果出现显著差异。晶状体剂量可能是围裙上方剂量计值的 64%至 88%（使用中位数或第三四分位数）。使用 88%可能是一种保守的方法。
