This multicenter study evaluated computed tomography dose index volume (CTDI_vol) and dose length product (DLP) to contribute to establishing computed tomography (CT) national diagnostic reference levels (NDRLs) in the United Arab Emirates (UAE). Data from 240 patients, who underwent CT head, chest, abdomen–pelvis and urography examinations, were analyzed, including patient age, sex and weight, CTDI_vol (mGy) and DLP (mGy cm). The proposed DRLs for each examination were calculated as the third quartile. DRLs are proposed using CTDI_vol (mGy) and DLP (mGy cm) for CT head (67 and 1189, respectively), chest (8 and 302, respectively), abdomen–pelvis (28 and 1122, respectively) and urography (20 and 714, respectively). These values are comparable with the initial NDRLs and published international DRLs. Baseline values for International Radiology Center (IRC) CT DRLs were calculated on frequently performed CT examinations. Implementation of DRL values improves dose optimization based on procedures, scanner type and patient characteristics while maintaining acceptable image quality and diagnostic confidence.

中文翻译：

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迈向阿拉伯联合酋长国国家CT诊断参考水平：CT剂量指数和剂量面积乘积的多中心评价。

这项多中心研究评估了计算机断层摄影的剂量指数体积（CTDI _vol）和剂量长度乘积（DLP），有助于在阿拉伯联合酋长国（UAE）建立计算机断层摄影（CT）国家诊断参考水平（NDRL）。分析了来自240例接受CT头，胸，腹部-骨盆和尿路造影检查的患者的数据，包括患者年龄，性别和体重，CTDI_体积（mGy）和DLP（mGy cm）。每次检查的拟议DRL被计算为第三四分位数。使用CTDI _vol提出DRLCT头（分别为67和1189），胸部（分别为8和302），腹部-骨盆（分别为28和1122）和泌尿造影（分别为20和714）的mGy和DLP（mGy cm）。这些值与最初的NDRL和已发布的国际DRL相当。国际放射学中心（IRC）CT DRL的基线值是根据经常进行的CT检查计算得出的。DRL值的实现可根据操作程序，扫描仪类型和患者特征改进剂量优化，同时保持可接受的图像质量和诊断可信度。