Hatami Alireza, Bagheri Mahmoud, Falahati Farzaneh, Banaei Amin, Abedi-Firouzjah Razzagh, Zamani Hamed, Kiapour Mohammad, Momeni Farideh
Department of Medical Physics, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran.
MethodsX. 2020 Oct 10;7:101097. doi: 10.1016/j.mex.2020.101097. eCollection 2020.
This study aimed to introduce a new method for eye lens thermo-luminescent dosimetry and also estimate the dose associated with induced cancer risk due to the ionizing radiation exposure received by physicians and other staff cooperating in interventional cardiology (IC) procedures. The measurements were performed with six TLDs (thermoluminescent dosimeters): four TLDs for eye lens dosimetry (2 positioned on respiratory/surgical mask under the eye region as the new method; and 2 near the outside border of the eye as the common method) and two TLDs for whole-body dosimetry. Whole-body doses were used to calculate the cancer risks induced by IC procedures. The results of the new proposed method for eye lens dosimetry were similar to common TLD positioning (mean differences <5%) and mask displacement had no significant effect on eye dose measurement in our new method. Our proposed method for eye lens dosimetry is simpler and more comfortable compared to the common method and it can be used as an alternative method without using TLD holders to monitor lens dose for IC workers wearing masks during the procedure. The estimated excess cancer incidence risk induced by IC procedures was 29.58 ± 5.71 and 46.68 ± 7.77 (per 100000 individuals) for men and women, respectively.
本研究旨在介绍一种用于眼晶状体热释光剂量测定的新方法，并估算在介入心脏病学（IC）手术中，医生和其他工作人员因电离辐射暴露而导致的诱发癌症风险所对应的剂量。测量使用了六个热释光剂量计（TLD）：四个用于眼晶状体剂量测定（两个作为新方法放置在眼部区域下方的呼吸/手术面罩上；另外两个作为常用方法放置在眼外侧边缘附近），两个用于全身剂量测定。全身剂量用于计算IC手术诱发的癌症风险。新提出的眼晶状体剂量测定方法的结果与常用的TLD定位方法相似（平均差异<5%），并且在我们的新方法中，面罩移位对眼部剂量测量没有显著影响。与常用方法相比，我们提出的眼晶状体剂量测定方法更简单、更舒适，并且在手术过程中，对于佩戴面罩的IC工作人员，它可以作为一种无需使用TLD支架来监测晶状体剂量的替代方法。IC手术诱发的估计额外癌症发病率风险，男性为29.58±5.71，女性为46.68±7.77（每100000人）。
