First nationwide clinical indication-based diagnostic reference levels incorporating size-specific dose estimates for adult chest CT in Morocco.

IF 1.2 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Emergency Radiology Pub Date : 2026-10-01 Epub Date: 2026-06-19 DOI:10.1007/s10140-026-02507-w

Youssef Madkouri, Hamza Sekkat, Oussama El Mouden, Farida Bentayeb, Youssef El Merabet, Abdellah Khallouqi, Abdellah Halimi, Omar El Rhazouani

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引用次数: 0

Abstract

Purpose: To establish nationwide clinical indication-based multicenter diagnostic reference levels (DRLs) for adult chest CT examinations in Morocco.

Methods: This retrospective multicenter study included 1,238 adult chest CT examinations grouped into four clinical indications: Lung nodule/follow-up, Infection/ILD/fibrosis, lung cancer staging/lymph node evaluation, and emergency/PE/trauma. For each indication, CTDIvol and dose-length product (DLP) were analyzed. Multicenter DRLs were defined as the 75th percentile of center-level median CTDIvol and DLP values. Differences between indication groups were assessed using the Kruskal-Wallis test, with results reported using medians and 95% confidence intervals.

Results: Dose levels differed significantly between clinical indications for both CTDIvol and DLP (p < 0.001). Emergency/PE/trauma examinations showed the highest patient-level dose values, followed by lung cancer staging/lymph node evaluation, infection/ILD/fibrosis, and lung nodule/follow-up. Patient-level P75 values for CTDIvol were 10.11, 7.10, 5.00, and 4.80 mGy, respectively, while corresponding DLP P75 values were 439.78, 339.60, 250.00, and 214.60 mGy·cm.

Conclusion: Adult chest CT dose levels vary substantially according to clinical indication. Clinical indication-based multicenter DRLs provide a more appropriate optimization framework than a single anatomy-based chest CT DRL and should be used to guide protocol harmonization and dose optimization in Moroccan CT practice.

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摩洛哥首次纳入成人胸部CT尺寸特异性剂量估计的全国性临床指征诊断参考水平。

目的：为摩洛哥成人胸部CT检查建立全国性的临床指征多中心诊断参考水平（drl）。方法：这项回顾性多中心研究包括1238例成人胸部CT检查，分为四个临床适应症：肺结节/随访、感染/ILD/纤维化、肺癌分期/淋巴结评估和急诊/PE/创伤。对于每个适应症，分析CTDIvol和剂量长度产物（DLP）。多中心drl定义为CTDIvol和DLP中位数的第75个百分位。采用Kruskal-Wallis检验评估适应症组之间的差异，结果报告采用中位数和95%置信区间。结果：CTDIvol和DLP的剂量水平在临床适应症之间存在显著差异(p)。结论：成人胸部CT剂量水平因临床适应症而有较大差异。基于临床适应症的多中心DRL提供了比单一的基于解剖的胸部CT DRL更合适的优化框架，应用于指导摩洛哥CT实践中的方案协调和剂量优化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Emergency Radiology RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-

CiteScore

4.60

自引率

4.50%

发文量

期刊介绍： To advance and improve the radiologic aspects of emergency careTo establish Emergency Radiology as an area of special interest in the field of diagnostic imagingTo improve methods of education in Emergency RadiologyTo provide, through formal meetings, a mechanism for presentation of scientific papers on various aspects of Emergency Radiology and continuing educationTo promote research in Emergency Radiology by clinical and basic science investigators, including residents and other traineesTo act as the resource body on Emergency Radiology for those interested in emergency patient care Members of the American Society of Emergency Radiology (ASER) receive the Emergency Radiology journal as a benefit of membership!