Radiation Risks of Computed Tomography: Estimating Cancer Incidence from Diagnostic Imaging
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Le résumé fourni par la source
Background: Computed tomography (CT) is an essential diagnostic imaging modality in modern medicine; however, it exposes patients to ionising radiation, which carries a measurable long-term risk of radiation-induced malignancy. With the increasing global use of CT, particularly for chest and abdominal imaging, quantifying radiation exposure and associated cancer risk has become a critical public health concern. Objective: This study aimed to evaluate radiation dose exposure and estimate the lifetime cancer risk attributable to diagnostic CT examinations in a real-world clinical cohort using established risk models. Materials and Methods: A retrospective analysis was conducted on 500 adult patients who underwent head, chest, or abdominal CT examinations between 2019 and 2023 at a tertiary care hospital. Effective radiation doses were calculated using dose–length product (DLP) conversion factors. Lifetime attributable cancer risk was estimated using the Biological Effects of Ionising Radiation VII (BEIR VII) models, accounting for age, sex, and examination type. Results: The mean effective dose per patient was 8.7 mSv, with abdominal CT delivering the highest mean dose (12.8 ± 3.5 mSv), followed by chest CT (10.2 ± 2.1 mSv) and head CT (2.1 ± 0.6 mSv). The total collective dose for the cohort was approximately 4.6 Sv. Based on BEIR VII risk estimates, CT-related radiation exposure was projected to result in approximately 4–5 excess lifetime cancer cases and 2–3 cancer-related deaths per 500 patients. Higher projected risks were observed in females, younger patients, and individuals undergoing repeated CT examinations. Conclusion: Although the individual cancer risk associated with CT imaging is low, the cumulative population-level risk is clinically significant. Abdominal and chest CT examinations contribute disproportionately to radiation burden and projected cancer incidence. These findings emphasise the importance of strict justification of CT use, adherence to ALARA principles, optimisation of scan protocols, and expanded implementation of low-dose CT techniques to ensure patient safety while preserving diagnostic efficacy.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Radiation Risks of Computed Tomography: Estimating Cancer Incidence from Diagnostic Imaging
- Date Crossref
- 01/01/2026
- Éditeur
- XLE Science
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Guru Jambheshwar University of Science and Technology pays non établi dans la noticeUniversité ou école supérieure
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Maulana Azad National Urdu University pays non établi dans la noticeUniversité ou école supérieure
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Noida International University pays non établi dans la noticeUniversité ou école supérieure
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Teerthanker Mahaveer University pays non établi dans la noticeUniversité ou école supérieure
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Teerthanker Mahaveer Medical College & Research Centre pays non établi dans la noticeÉtablissement de santé
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Galgotias University Department of Radiology pays non établi dans la noticeUniversité ou école supérieure
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Guru Jambheshwar University of Science & Technology Department of Allied Health Sciences pays non établi dans la noticeUniversité ou école supérieure
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Department of Vocational Studies & Skill Development (School of Science) Assistant Professor pays non établi dans la noticeUniversité ou école supérieure
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Al-Karim University Department of Radio-Diagnosis & Imaging Technology pays non établi dans la noticeUniversité ou école supérieure
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School of Allied Health Sciences Department of Medical Radio-diagnosis and Imaging Technology pays non établi dans la noticeUniversité ou école supérieure
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College of Paramedical Sciences Department of Radiological Imaging Techniques (RIT) pays non établi dans la noticeUniversité ou école supérieure
Guru Jambheshwar University of Science and Technology, Maulana Azad National Urdu University et Noida International University, avec 8 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.