This work investigates pediatric patients' radiation doses during multiphasic computed tomography (CT) abdomen procedures in six hospitals. A total of 58 (14 (24% females)) and 44 males (44, 76%) underwent CT single or multiphase procedures. A single phase and triple phase CT examination were carried a wide range of clinical indications, including renal and digestive systems pathologies. All procedures were performed at six radiology departments. Three departments are equipped with 16 slice CT machines, and the other three departments are equipped with 160, 128 and 16 slice CT machines. The overall 3rd quartile values for CTDI_vol (mGy) and DLP (mGy.cm) were 8.6 ± 4.7 (mGy) and 1580 ± 594.64 (mGy.cm) per CT abdomen procedure. The current study indicates the need for dose optimization for pediatric patients by establishing proper imaging protocols based on the international guidelines. The variation in patients’ doses is attributed to variation in the imaging protocols, scan length and number of phases performed per pediatric CT abdomen procedure.

这项工作调查了六家医院多相计算机断层扫描 (CT) 腹部手术过程中儿科患者的辐射剂量。共有 58 名（14 名（24% 女性））和 44 名男性（44 名，76%）接受了 CT 单期或多期手术。单相和三相 CT 检查进行了广泛的临床适应症，包括肾脏和消化系统病理。所有程序均在六个放射科进行。三个科室配备了16层CT机，另外三个科室配备了160、128和16层CT机。CTDI _vol的整体第三四分位数值每个 CT 腹部手术 (mGy) 和 DLP (mGy.cm) 分别为 8.6 ± 4.7 (mGy) 和 1580 ± 594.64 (mGy.cm)。目前的研究表明，需要通过根据国际指南建立适当的成像协议来优化儿科患者的剂量。患者剂量的变化归因于成像协议、扫描长度和每个儿科 CT 腹部手术执行的阶段数的变化。