Abstract Purpose The goal of this pilot study was to estimate the doses delivered during of pelvimetry Computed Tomography (CT) procedures in order to establish local diagnostic reference level (DRL) of Ibn Sina Children's Hospital of Rabat. Materials and methods This study consisted of examining a total of 30 patients. All CT examinations were performed with a SIEMENS Somatom Sensation 64 CT with Automatic Exposure Control System. The data that collected for each diagnostic exam chosen included scanner acquisition parameters, number of series, use of the contrast medium, and rotation time as well as slice thickness, the displayed CT dose index (CTDIvol) and the Dose Length Product (DLP). Effective dose and DRL were evaluated using the International Commission on Radiological Protection (ICRP) conversion factor. Results The average age of women who have benefited from the pelvimetry CT scan is equal to 25.10 ± 4.75 years. Tube voltage (kV), tube current and rotation time were 110 (kV), 30 (mA) and 0,8 (s) respectively. The average displayed CT dose index CTDIvol were 2.15 ± 0.02 mGy. The average dose length product (DLP) was (55.97 ± 0.25) mGy cm. The average effective dose received by women pregnant during a pelvimetry CT scan was 0.84 ± 0.01 mSv. The foetal dose was 2.36 ± 0.02 mGy. The local DRL for this procedure was equal to 56.66 ± 2.15 mGy cm. Conclusion Our values are higher than the standards of some European countries. This first ever survey of CT practice in Ibn Sina Children's Hospital of Rabat confirmed the need to improved training of health professionals involved in computed tomography on factors affecting image quality and dose and protocols optimization.

中文翻译：

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拉巴特 Ibn Sina 儿童医院骨盆测量 CT 过程中的辐射暴露

摘要 目的本试点研究的目的是估计骨盆测量计算机断层扫描 (CT) 程序期间提供的剂量，以建立拉巴特 Ibn Sina 儿童医院的本地诊断参考水平 (DRL)。材料和方法 该研究包括检查总共 30 名患者。所有 CT 检查均使用带有自动曝光控制系统的 SIEMENS Somatom Sensation 64 CT 进行。为所选的每个诊断检查收集的数据包括扫描仪采集参数、系列数量、造影剂的使用、旋转时间以及切片厚度、显示的 CT 剂量指数 (CTDIvol) 和剂量长度乘积 (DLP)。使用国际放射防护委员会 (ICRP) 转换系数评估有效剂量和 DRL。结果 从骨盆测量 CT 扫描中受益的女性平均年龄为 25.10 ± 4.75 岁。管电压 (kV)、管电流和旋转时间分别为 110 (kV)、30 (mA) 和 0.8 (s)。平均显示 CT 剂量指数 CTDIvol 为 2.15 ± 0.02 mGy。平均剂量长度乘积 (DLP) 为 (55.97 ± 0.25) mGy cm。怀孕妇女在骨盆测量 CT 扫描期间接受的平均有效剂量为 0.84 ± 0.01 mSv。胎儿剂量为 2.36 ± 0.02 mGy。该程序的局部 DRL 等于 56.66 ± 2.15 mGy cm。结论 我们的价值观高于一些欧洲国家的标准。这是 Ibn Sina 儿童医院 CT 实践的首次调查