CT accounts for the highest radiation dose among various imaging modalities. Children are more susceptible to the harmful effects of radiation because of their higher cell-division rate and the likelihood of longer lifespans. Therefore, it is important to monitor pediatric CT doses to minimize their potential risks. The objective of this study was to evaluate the radiation doses received by pediatrics undergoing trunk CT procedures and to estimate the associated cancer risk. A total of 255 pediatric patients who underwent chest (92 cases), abdomen & pelvis (133 cases), and chest-abdomen-pelvis (CAP) scans (30 cases) from hospitals within the central region of Saudi Arabia were categorized into four age groups: <1 year, 1–5 years, 6–10 years, and 11–15 years. The averages and ranges of DLP and CTDI from each procedure were measured and compared with international reports. The effective dose and cancer risk from each procedure were also reported. The mean and range DLP (mGy.cm) for chest, abdomen & pelvis, and CAP examinations were found to be 131.5 (13.8–375.5), 244 (10.5–1353), and 94.2 (23.5–239), respectively. The mean and range CTDI (mGy) for chest, abdomen & pelvis, and CAP examinations were found to be 5.5 (1–33.8), 5.5 (0.9–18.6), and 3.6 (1.3–24.8) in order. The effective dose (mSv) and associated cancer risk (case/10,000 cases) for chest, abdomen & pelvis, and CAP ranges between (2.31–3.37; 1.27–1.85), (4.19–6.89; 2.30–3.78), and (1.89–3.58; 1.04–1.97), respectively. Estimations of effective doses and cancer risk were conducted for pediatric patients aged <1 through 15 years who underwent chest, abdomen & pelvis, and CAP procedures. The documented dose levels in this study were relatively elevated compared to similar reports, revealing substantial variations even within the same procedure and age group category. Therefore, prioritizing dose optimization practices becomes crucial to mitigate potential radiation-induced cancer risks.

中文翻译：

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沙特阿拉伯中部地区儿科胸部和骨盆 CT 手术的有效剂量和癌症风险评估

在各种成像方式中，CT 的辐射剂量最高。儿童更容易受到辐射的有害影响，因为他们的细胞分裂率更高，寿命可能更长。因此，监测儿童 CT 剂量以尽量减少潜在风险非常重要。本研究的目的是评估接受躯干 CT 手术的儿科接受的辐射剂量，并估计相关的癌症风险。沙特阿拉伯中部地区医院共有 255 名儿童患者接受了胸部（92 例）、腹部和骨盆（133 例）以及胸腹骨盆 (CAP) 扫描（30 例），分为四个年龄组组别：<1 岁、1-5 岁、6-10 岁和 11-15 岁。测量每个程序的 DLP 和 CTDI 的平均值和范围，并与国际报告进行比较。还报告了每次手术的有效剂量和癌症风险。胸部、腹部和骨盆以及 CAP 检查的平均 DLP (mGy.cm) 和范围 (mGy.cm) 分别为 131.5 (13.8–375.5)、244 (10.5–1353) 和 94.2 (23.5–239​​)。胸部、腹部和骨盆以及 CAP 检查的平均 CTDI (mGy) 和范围依次为 5.5 (1–33.8)、5.5 (0.9–18.6) 和 3.6 (1.3–24.8)。胸部、腹部和骨盆以及 CAP 的有效剂量 (mSv) 和相关癌症风险（病例/10,000 例）范围在 (2.31–3.37; 1.27–1.85)、(4.19–6.89; 2.30–3.78) 和 (1.89) 之间。 –3.58；1.04–1.97）。对年龄 <1 至 15 岁接受胸部、腹部和骨盆以及 CAP 手术的儿科患者进行了有效剂量和癌症风险的估计。与类似的报告相比，本研究中记录的剂量水平相对较高，即使在相同的手术和年龄组类别中也显示出很大的差异。因此，优先考虑剂量优化实践对于减轻潜在的辐射诱发癌症风险至关重要。