The size-specific dose estimates (SSDE) have been recommended to replace the volume computed tomography dose index (CTDIvol) because it takes patient size into account. On the other hand, organ dose is thought to be a more appropriate quantity in the radiation protection field due to its correlation with radiation risk. The web-based computed tomography (CT) dose calculator WAZA-ARIv2 only offers organ doses for adults with four different body shapes and for children with five different ages. Since the American Association of Physicists in Medicine (AAPM) offers the conversion factors for SSDE and the correlation of SSDE with organ dose has been demonstrated, implementation of the conversion table might improve the accuracy of WAZA-ARIv2. This study aimed to evaluate a body mass index (BMI)-based and age-based correction method for estimation of the organ dose by using a radiophotoluminescence dosimeter (RGD), an anthropomorphic phantom, and the dose calculator WAZA-ARIv2. RGDs were individually calibrated by using an ISOVOLT TITAN-320 x-ray generator. The ratio of the SSDE conversion factors (CFSSDE) was used as the comparison index. For the BMI-based correction method, the ratio of CFSSDE values for the adult phantoms was expected to be 1.065, and the average ratio of the organ doses for the adult phantoms was 1.163 ± 0.169. For the age-based correction method, the ratio of CFSSDE value for 5- and 10-y-old pediatric phantoms was expected to be 0.889, and the ratios of the organ doses were 0.866 ± 0.024 and 0.909 ± 0.047 for the WAZA-ARIv2 dosimetry system and RGD dosimetry system, respectively. In conclusion, both evaluations of the experimental results showed the consistency between WAZA-ARIv2 and the SSDE conversion factor table. Moreover, the importance of taking the measurement position into account when applying the mass attenuation coefficient was demonstrated according to this study.

中文翻译：

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使用放射光致发光玻璃剂量计和基于蒙特卡罗的剂量计算器，评估使用年龄和 BMI 估算 CT 器官剂量的校正​​方法。

建议使用体型特异性剂量估计 (SSDE) 来取代体积计算机断层扫描剂量指数 (CTDIvol)，因为它考虑了患者体型。另一方面，由于器官剂量与辐射风险的相关性，器官剂量被认为是辐射防护领域更合适的量。基于网络的计算机断层扫描 (CT) 剂量计算器 WAZA-ARIv2 仅为四种不同体型的成人和五种不同年龄的儿童提供器官剂量。由于美国医学物理学家协会（AAPM）提供了 SSDE 的换算系数，并且 SSDE 与器官剂量的相关性已得到证明，换算表的实施可能会提高 WAZA-ARIv2 的准确性。本研究旨在通过使用放射光致发光剂量计（RGD）、拟人模型和剂量计算器 WAZA-ARIv2 来评估基于体重指数（BMI）和基于年龄的器官剂量估计校正方法。RGD 使用 ISOVOLT TITAN-320 X 射线发生器单独校准。SSDE转换因子的比率（CFSSDE）被用作比较指标。对于基于BMI的校正方法，成人体模的CFSSDE值的比率预计为1.065，成人体体的器官剂量的平均比率为1.163±0.169。对于基于年龄的校正方法，预计 5 岁和 10 岁儿童模型的 CFSSDE 值之比为 0.889，WAZA-ARIv2 的器官剂量之比为 0.866 ± 0.024 和 0.909 ± 0.047分别是剂量测定系统和RGD剂量测定系统。总之，对实验结果的两次评估都表明WAZA-ARIv2和SSDE转换因子表之间的一致性。此外，根据这项研究证明了在应用质量衰减系数时考虑测量位置的重要性。