Department of Radiology, Centre Hospitalier de Université de Montréal, Montreal, Quebec, Canada.
Centre de recherche, 25443CHUM (CRCHUM), Montreal, Quebec, Canada.
Can Assoc Radiol J. 2021 May;72(2):317-323. doi: 10.1177/0846537120911755. Epub 2020 Mar 27.
To quantify eye lens dose in interventional radiology and assess whether neck dosimeter is a good surrogate to evaluate eye lens dosimetry.
Radiation exposure was prospectively measured in 9 interventional radiologists between May and October 2017. Standard Hp(0,07) thermoluminescent dosimeters (TLDs) were worn at the neck outside the lead apron, and 2 dedicated eye lens Hp(3) TLDs were placed just above the eyes, one midline and another at the outer edge of the left eye. Correlations between eye lens and neck TLD doses were assessed with Pearson coefficient, and linear regression was used to predict eye lens dose from neck TLD values.
Eye lens dose without eye protection was 0.18 ± 0.11 (mean ± standard deviation; 0.08-0.41) mSv per workday and 35.3 ± 6.6 mSv (16.3-82.9) annually (200 workdays/year). Five (56%) radiologists exceeded the 20 mSv annual eye lens dose limit. Eye lens doses from left and central TLDs were 12.46 ± 3.02 and 9.29 ± 3.38 mSv, respectively ( = .027). Mean eye lens (left and central) and neck TLD doses were 10.87 ± 2.67 and 16.56 ± 5.67 mSv, respectively ( = .008). Pearson correlation coefficient between both eye lens TLD and between mean eye lens TLD and neck TLD doses were 0.91 and 0.92, respectively. Average of eye lens dose was 0.0179 + (0.5971 × neck dose).
Full-time interventional radiologists are likely to suffer from deterministic radiation effects to the eye lens, especially on the left side. Neck TLD significantly overestimates eye lens dose. However, eye lens doses are highly correlated with neck doses and may be predicted from the neck TLD values.
量化介入放射学中的晶状体剂量，并评估颈部剂量计是否是评估晶状体剂量的良好替代物。
2017 年 5 月至 10 月期间，前瞻性测量了 9 名介入放射科医生的辐射暴露情况。标准 Hp(0,07)热释光剂量计（TLD）佩戴在铅围裙外的颈部，2 个专用晶状体 Hp(3)TLD 分别置于眼睛上方，一个位于中线，另一个位于左眼外边缘。使用 Pearson 系数评估晶状体 TLD 剂量与颈部 TLD 剂量之间的相关性，并使用线性回归来预测颈部 TLD 值的晶状体剂量。
无眼部防护的晶状体剂量为每个工作日 0.18 ± 0.11（均值 ± 标准差；0.08-0.41）mSv，每年 35.3 ± 6.6 mSv（16.3-82.9）（每年 200 个工作日）。5 名（56%）放射科医生超过了每年 20 mSv 的晶状体剂量限值。左 TLD 和中央 TLD 的晶状体剂量分别为 12.46 ± 3.02 和 9.29 ± 3.38 mSv（ =.027）。平均晶状体（左和中央）和颈部 TLD 剂量分别为 10.87 ± 2.67 和 16.56 ± 5.67 mSv（ =.008）。两个晶状体 TLD 之间以及平均晶状体 TLD 和颈部 TLD 剂量之间的 Pearson 相关系数分别为 0.91 和 0.92。平均晶状体剂量为 0.0179 +（0.5971×颈部剂量）。
全职介入放射科医生可能会遭受晶状体的确定性辐射效应，尤其是左侧。颈部 TLD 明显高估了晶状体剂量。然而，晶状体剂量与颈部剂量高度相关，并且可以从颈部 TLD 值预测。
