Department of Bio-Convergence Engineering, Korea University Graduate School, Seoul 02841, Korea.
Center for Radiological Environment & Health Science, Dongseo University, Busan 47011, Korea.
Tomography. 2022 Sep 29;8(5):2450-2459. doi: 10.3390/tomography8050203.
In 2021, the Korean government proposed a new CT diagnostic reference level. This study performed a nationwide survey and developed new DRLs and AD for 13 common CT examinations. We compared other countries' DRLs for CT examinations. This study investigated the CTDI and DLP of the 12 types of CT protocols for adults and brain CT protocol for pediatrics. A total of 7829 CT examinations were performed using 225 scanners. We defined the DRLs values in the distribution of radiation exposure levels to determine the nationwide patient dose and distribution status of the dose. This study showed that the new Korean national CT DRLs are slightly higher or similar to those of previous surveys and are similar or lower than those of other countries. In some protocols, although the DLP value increased, the CTDI decreased; therefore, it can be concluded that the patient's dose in CT examinations was well managed. The new CT DRLs were slightly higher than or similar to that of the previous survey and were evaluated to be similar or lower than CT DRLs of other countries. These DRLs will be used for radiation optimization and effective dose calculation for an individual.
2021 年，韩国政府提出了新的 CT 诊断参考水平。本研究进行了全国性调查，为 13 种常见 CT 检查制定了新的 DRL 和 AD。我们比较了其他国家的 CT 检查 DRL。本研究调查了成人的 12 种 CT 协议和儿科脑 CT 协议的 CTDI 和 DLP。共使用 225 台扫描仪进行了 7829 次 CT 检查。我们在辐射暴露水平的分布中定义了 DRL 值，以确定全国范围内的患者剂量和剂量分布情况。本研究表明，新的韩国国家 CT DRL 略高于或类似于以往调查，与其他国家相似或低于其他国家。在某些协议中，虽然 DLP 值增加，但 CTDI 降低；因此，可以得出结论，CT 检查中患者的剂量得到了很好的管理。新的 CT DRL 略高于或类似于之前的调查，并且被评估为与其他国家的 CT DRL 相似或更低。这些 DRL 将用于个体的辐射优化和有效剂量计算。
