Adambounou Kokou, Sedo Kouamivi, Yao Adigo Amégninou Mawuko, Sonhaye Lantam, Sodogas Fabrice, Adjenou Victor
Biophysic and Nuclear Medicine Departments, Campus Teaching Hospital, University of Lome, Togo; Radiology Department, Campus Teaching Hospital, University of Lome, Togo.
Radiology Department, Campus Teaching Hospital, University of Lome, Togo.
J Med Imaging Radiat Sci. 2021 Jun;52(2):265-271. doi: 10.1016/j.jmir.2021.01.006. Epub 2021 Feb 23.
To assess the entrance surface dose (ESD) of pediatric chest X-ray examinations in order to establish a diagnostic reference levels (DRLs) in Togo.
The study was carried out in 13 radiology departments within the 6 health regions of the country. This is a descriptive cross-sectional study relating to the dosimetric assessment of the skin of children aged from 0 to 15 years during chest X-ray examinations. The assessment was made by the empirical formula calculation of the entrance surface dose (ESD = 0.15 × (U/100) × Q × (1/FSD)) and with the Internet Dose Calculation Module (MICADO) software online. Statistical assessment was performed using IBM SPSS 21 software.
Our sample numbered 390 with a sex ratio of 1.3 and predominantly male. Examinations performed with the analog radiography units were more irradiating (0.14 mGy) than ones performed with digital detectors (0.12 mGy). The mean dose calculated with MICADO was low (Avg. = 0.12 mGy) compared to that calculated with the theoretical method (Avg. = 0.16 mGy). No significant relationship was found between the professional experience of operators and the entrance surface dose (r > -1 with p = 0.146 not significant). MICADO doses increased with age. The values of the diagnostic reference levels used for the antero-posterior or postero-anterior chest X-ray examinations for children aged 0-1 year; 1-5 years; 5-10 years and 10-15 years were respectively, 0.15 mGy; 0.14 mGy; 0.15 mGy and 0.17 mGy.
The entrance surface dose varied greatly from one health facility to another for this same examination. In most of the different age groups of children, the diagnostic reference level was higher than that found in literature. Thus, effective measures must be put in place to optimize the doses delivered to children during chest X-ray examinations.
评估多哥儿科胸部X线检查的体表入射剂量（ESD），以建立诊断参考水平（DRLs）。
该研究在该国6个健康区域的13个放射科进行。这是一项描述性横断面研究，涉及对0至15岁儿童胸部X线检查期间皮肤的剂量学评估。评估通过体表入射剂量的经验公式计算（ESD = 0.15 × (U/100) × Q × (1/FSD)）以及在线使用互联网剂量计算模块（MICADO）软件进行。使用IBM SPSS 21软件进行统计评估。
我们的样本数量为390，性别比为1.3，男性占主导。使用模拟放射成像设备进行的检查比使用数字探测器进行的检查辐射更大（0.14 mGy）（数字探测器检查为0.12 mGy）。与用理论方法计算的剂量（平均 = 0.16 mGy）相比，用MICADO计算的平均剂量较低（平均 = 0.12 mGy）。未发现操作人员的专业经验与体表入射剂量之间存在显著关系（r > -1，p = 0.146，不显著）。MICADO计算的剂量随年龄增加。0至1岁、1至5岁、5至10岁和10至15岁儿童前后位或后前位胸部X线检查的诊断参考水平值分别为0.15 mGy、0.14 mGy、0.15 mGy和0.17 mGy。
对于同一项检查，不同医疗机构之间的体表入射剂量差异很大。在大多数不同年龄组的儿童中，诊断参考水平高于文献中报道的水平。因此，必须采取有效措施优化儿童胸部X线检查期间的辐射剂量。
