Impact of Computed Tomography Scans on the Risk of Thyroid Disease in Minor Head Injury Patients: A Population-Based Retrospective Cohort Study

Shao-Lun Tsao, Yin-Yang Chen, Liang-Tsai Yeh, Jing-Yang Huang, Wen-Tyng Li, Shun-Fa Yang and Chao-Bin Yeh
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Shao-Lun Tsao: Department of Biomedical Engineering, Chung Yuan Christian University, Taoyuan 320, Taiwan
Yin-Yang Chen: Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
Liang-Tsai Yeh: Department of Anesthesiology, Changhua Christian Hospital, Changhua 500, Taiwan
Jing-Yang Huang: Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
Wen-Tyng Li: Department of Biomedical Engineering, Chung Yuan Christian University, Taoyuan 320, Taiwan
Shun-Fa Yang: Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
Chao-Bin Yeh: Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan

IJERPH, 2020, vol. 17, issue 11, 1-9

Abstract: We investigated the association between head computed tomography (CT) scans and the risk of noncancer thyroid diseases in patients with minor head injury in a Taiwanese healthcare setting. For this retrospective population-based cohort study, the 2009–2013 Longitudinal Health Insurance Database was used to include patients with a minor head injury at admission or emergency visit between 2009 and 2013. Multivariate analysis with a multiple Cox regression model was applied to analyze the data. According to whether a CT scan was conducted within 14 days of admission, patients were divided into a CT scan group (n = 14,041) or a non-CT scan group (n = 34,684). No increased incidence of thyroid diseases was observed in the CT scan group regardless of the number of CT scans performed. The incidence rate ratio for one scan was 1.10 (95% confidence interval: 0.94–1.29) and for two or more scans was 1.09 (95% confidence interval: 0.93–1.28). In conclusion, this population-based cohort study showed that a head CT scan is not associated with increased risk of thyroid disease in patients with minor head injury. The short-term adverse effects on the thyroid could be mild when a regular CT scan is appropriately performed.

Keywords: computer tomography; minor head injury; thyroid diseases (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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