ArticleCureus2025
Diagnostic Utility of Fluorine-18 Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography in Infectious Diseases: A Retrospective Study.
Article in Cureus, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Diagnostic Value of 18F-FDG PET/CT in Guiding Biopsy Decisions and Differentiating Infectious, Inflammatory and Malignant Lesions.Journal of clinical medicine · 2026Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimThis study aims to evaluate the utility of fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) test for various infectious indications, analyze its diagnostic value, and assess its correlation with suspected diagnoses. Additionally, secondary endpoints include evaluating the test's usefulness in clinical management and identifying predictors of PET/CT positivity.
methodsA retrospective descriptive observational study was conducted on in-hospital patients who underwent 18F-FDG PET/CT for suspected infections.
resultsA total of 89 patients were reviewed. The predominant symptoms were fever (68.5%) and respiratory symptoms (38.2%). The most common prior complementary tests were microbiological (89.9%) and imaging (94.4%). Indications for PET/CT included fever of unknown origin (27%), focal infections (20.2%), bacteremia (34.8%), and immunocompromised patients (18%). Diagnostic confirmation was achieved in 60.7% of cases. The test's usefulness (confirmation and unexpected findings) was 76.4%. Only 9.5% of patients without an initial diagnosis after PET/CT received a confirmatory diagnosis later. The subgroup analysis revealed that fever of unknown origin was associated with a lower probability of confirmation and usefulness, whereas focal infection was linked to a higher likelihood of diagnostic confirmation. However, these associations did not persist in multivariate analysis due to the limited sample size.
conclusionOur study aims to optimize the diagnostic profitability of the 18F-FDG PET/CT test for specific infectious disease indications by analyzing previous literature. In our experience, the PET/CT test demonstrated a high percentage of diagnostic confirmation for patients with focal infections. In contrast, its diagnostic yield was significantly lower for prolonged fever of unknown origin.
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