Evidence map›Paper›PMID 42319637›Full record

ArticleEmergency radiology2026

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

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

Abstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in Emergency radiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Youssef MadkouriLaboratory of Electronic Systems, Information Processing, Mechanics and Energetics, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco. youssef.madkouri@uit.ac.ma.
Hamza SekkatSciences and Engineering of Biomedicals, Biophysics and Health Laboratory, Higher Institute of Health Sciences, Hassan First University, Settat, 26000, Morocco.
Oussama El MoudenSciences and Engineering of Biomedicals, Biophysics and Health Laboratory, Higher Institute of Health Sciences, Hassan First University, Settat, 26000, Morocco.
Farida BentayebLPHE-Modeling and Simulation, Faculty of Sciences, Mohammed V University, Rabat, Morocco.
Youssef El MerabetLaboratory of Electronic Systems, Information Processing, Mechanics and Energetics, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco.
Abdellah KhallouqiSciences and Engineering of Biomedicals, Biophysics and Health Laboratory, Higher Institute of Health Sciences, Hassan First University, Settat, 26000, Morocco.
Abdellah HalimiSciences and Engineering of Biomedicals, Biophysics and Health Laboratory, Higher Institute of Health Sciences, Hassan First University, Settat, 26000, Morocco.
Omar El RhazouaniSciences and Engineering of Biomedicals, Biophysics and Health Laboratory, Higher Institute of Health Sciences, Hassan First University, Settat, 26000, Morocco.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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

methodsThis 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.

resultsDose 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.

conclusionAdult 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.

Indexed as

Radiation DosageRadiography, ThoracicTomography, X-Ray ComputedAdultAgedDiagnostic Reference LevelsFemaleHumansMaleMiddle AgedMoroccoReference ValuesRetrospective StudiesChest CTClinical indication–based DRLsComputed tomography dosimetryDiagnostic reference levelsRadiation dose optimization

Identifiers

PMID42319637

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.