Alhailiy Ali, Alkhybari Essam, Alshuhri Mohammed, Al-Othman Abdullah, Hegazi Tarek, Alsuhaimi Mohammed, Alghamdi Sultan, Alenazi Khaled, Alashban Yazeed, Alghamdi Sami, Quzi Omar, Jaafari Osama, Alajlani Saleh, Masmali Abdulrahman, Hadi Yasser, Manssor Elbagir, Mahmoud Mustafa
Department of Radiology and Medical Imaging, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia.
Radiology Department, King Fahd Hospital of the University, Imam Abdulrahman Bin Faisal University, Dammam 34221, Saudi Arabia.
Diagnostics (Basel). 2024 Jul 15;14(14):1523. doi: 10.3390/diagnostics14141523.
Diagnostic reference levels (DRLs) are crucial tools for optimizing radiation exposure during different radiological examinations. This study aimed to establish preliminary DRLs for commonly performed computed tomographic angiography (CTA) examinations in Saudi Arabia.
Data for three types of CTA examinations (cerebral, pulmonary, and lower-extremity) were collected from six medical cities across Saudi Arabia. Data sets related to 723 CTAs with a mean patient weight of 75 kg were analysed in detail. The DRL values were determined based on the 75th, median, and 25th CT dose index volume (CTDI) and dose length product (DLP) values.
The established DRLs were 1221 mGy cm for cerebral CTAs, 475 mGy cm for pulmonary CTAs, and 1040 mGy cm for lower-extremity CTAs. These values were comparable to those reported in other studies.
This study provides preliminary DRLs for three common CTA procedures in Saudi Arabia. The widespread implementation of a low kVp and a high level of image reconstruction (IR) presents an opportunity for further dose reduction. These findings can serve as a foundation for future nationwide DRL surveys and the optimization of CTA imaging protocols in Saudi Arabia.
诊断参考水平（DRLs）是优化不同放射学检查期间辐射暴露的关键工具。本研究旨在为沙特阿拉伯常见的计算机断层血管造影（CTA）检查建立初步的DRLs。
从沙特阿拉伯的六个医疗城市收集了三种类型CTA检查（脑部、肺部和下肢）的数据。对723例平均患者体重为75 kg的CTA相关数据集进行了详细分析。DRL值基于第75、中位数和第25个CT剂量指数体积（CTDI）和剂量长度乘积（DLP）值确定。
建立的DRLs为脑部CTA 1221 mGy cm、肺部CTA 475 mGy cm和下肢CTA 1040 mGy cm。这些值与其他研究报告的值相当。
本研究为沙特阿拉伯三种常见的CTA程序提供了初步的DRLs。低千伏峰值和高水平图像重建（IR）的广泛应用为进一步降低剂量提供了机会。这些发现可为沙特阿拉伯未来全国性的DRL调查和CTA成像方案的优化奠定基础。
