Kiapour Mohammad, Ebrahimnejad Gorji Kourosh, Mehraeen Rahele, Ghaemian Naser, Niksirat Sustani Fatemeh, Abedi-Firouzjah Razzagh, Shabestani Monfared Ali
MSc, Student Research Committee, Babol University of Medical Sciences, Babol, Iran.
PhD, Department of Medical Physics Radiobiology and Radiation Protection, School of Medicine, Babol University of Medical Sciences, Babol, Iran.
J Biomed Phys Eng. 2021 Aug 1;11(4):497-504. doi: 10.31661/jbpe.v0i0.2104-1307. eCollection 2021 Aug.
Computed tomography (CT) is a routine procedure for diagnosing using ionization radiation which has hazardous effects especially on sensitive organs.
The aim of this study was to quantify the dose reduction effect of lead apron shielding on the testicular region during routine chest CT scans.
In this measurement study, the routine chest CT examinations were performed for 30 male patients with common lead aprons folded and positioned in testis regions. The patient's mean body mass index (BMI) was 26.2 ± 4.6 kg/m. To calculate the doses at testis region, three thermoluminescent dosimeters (TLD-100) were attached at the top surface of the apron as an indicator of the doses without shielding, and three TLDs under the apron for doses with shielding. The TLD readouts were compared using SPSS software (Wilcoxon test) version 16.
The radiation dose in the testicular regions was reduced from 0.46 ± 0.04 to 0.20 ± 0.04 mGy in the presence of lead apron shielding (p < 0.001), the reduction was equal to 56%. Furthermore, the heritable risk probability was obtained at 2.0 ×10 % and 4.6 ×10 % for the patients using the lead apron shield versus without shield, respectively.
Applying common lead aprons as shielding in the testis regions of male patients undergoing chest CT scans can reduce the radiation doses significantly. Therefore, this shield can be recommended for routine chest CT examinations.
计算机断层扫描（CT）是一种使用电离辐射进行诊断的常规程序，电离辐射具有有害影响，尤其是对敏感器官。
本研究的目的是量化在常规胸部CT扫描期间铅围裙屏蔽对睾丸区域的剂量降低效果。
在这项测量研究中，对30名男性患者进行常规胸部CT检查，将普通铅围裙折叠并放置在睾丸区域。患者的平均体重指数（BMI）为26.2±4.6kg/m。为了计算睾丸区域的剂量，在围裙顶表面附着三个热释光剂量计（TLD-100）作为无屏蔽时剂量的指标，在围裙下方放置三个TLD用于有屏蔽时的剂量。使用SPSS软件（Wilcoxon检验）第16版比较TLD读数。
在有铅围裙屏蔽的情况下，睾丸区域的辐射剂量从0.46±0.04mGy降低至0.20±0.04mGy（p<0.001），降低幅度达56%。此外，使用铅围裙屏蔽和未使用屏蔽的患者的遗传风险概率分别为2.0×10⁻⁶和4.6×10⁻⁶。
在接受胸部CT扫描的男性患者的睾丸区域使用普通铅围裙作为屏蔽可显著降低辐射剂量。因此，这种屏蔽可推荐用于常规胸部CT检查。
