Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Saudi Arabia.
Medical Services, Ministry of Interior, Saudi Arabia; Prince Sultan Complex, Deanship of Scientific Research, Central Laboratories, Taif University, Saudi Arabia.
Appl Radiat Isot. 2022 Feb;180:110049. doi: 10.1016/j.apradiso.2021.110049. Epub 2021 Nov 27.
The current study was aimed to estimate the entrance surface air kerma (ESAK, mGy) for adult patients undergoing conventional radiography of Anteroposterior pelvis examination, and finally to establish a local diagnostic reference level (DRL). A total of 500 patients were exposed to diagnostic radiation in four hospitals (coded A, B, C, and D) in Taif and Kharaj city, Saudi Arabia, with different X-ray equipment specifications. Patient demographic data like age (y), body mass index (BMI) in kg/m as well as exposure factors and X-ray tube output were recorded. ESAK (mGy) was first calculated using the exposure data and tube output values, then the ESAK values were used to estimate entrance surface dose (ESD). The average BMI was 23.9 kg/m. The mean tube potential used in A, B, C, and D hospitals and the corresponding estimated ESD were found to be 74.2, 69.8, 73, 76,7 kVp, and 2.54, 2.64, 2.94, 3.03 mGy respectively. The correlation coefficient between ESAK and BMI was found to be 0.98. When compared to computed radiography (CR), the conventional X-ray digital radiography reduces the radiation exposure in pelvic imaging by a factor of 1.18. The third quartile of median proposed a lower than the DRL of the previous studies.
本研究旨在估算行常规前后位骨盆检查的成年患者的体表入射空气比释动能（ESAK，mGy），最终建立当地的诊断参考水平（DRL）。在沙特阿拉伯的塔伊夫和哈里杰市的四家医院（编码为 A、B、C 和 D）中，共有 500 名患者接受了诊断辐射，这些患者使用了不同的 X 射线设备规格。记录了患者的人口统计学数据，如年龄（y）、体重指数（BMI）以 kg/m 为单位以及曝光因素和 X 射线管输出。首先使用曝光数据和管输出值计算 ESAK（mGy），然后使用 ESAK 值估算体表剂量（ESD）。平均 BMI 为 23.9 kg/m。在 A、B、C 和 D 医院中使用的平均管电位以及相应估计的 ESD 分别为 74.2、69.8、73、76.7 kVp 和 2.54、2.64、2.94、3.03 mGy。ESAK 与 BMI 之间的相关系数为 0.98。与计算机射线照相术（CR）相比，传统 X 射线数字射线照相术可将骨盆成像的辐射暴露降低 1.18 倍。中位数的第三个四分位数低于先前研究的 DRL。
