Magnitude of Serum β-Hydroxybutyrate Elevations and Myocardial Glucose Suppression in 18F-FDG PET-CT for Cardiac Sarcoidosis

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ID: 328717
2026
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Abstract
Abstract This retrospective cohort study evaluated the relationship between serum β-hydroxybutyrate (BHB) levels and myocardial glucose suppression in 74 patients undergoing 18F-FDG PET/CT for suspected cardiac sarcoidosis. The average BHB concentration prior to FDG administration was 0.94 ± 0.78 mmol/L. The septal-to-blood pool uptake ratio (SUVmax_septal/SUVmean_blood pool) ranged from 0.50 to 0.88, with a median of 0.66 (Quartile 1 = 0.58, Quartile 3 = 0.73). No significant association was found between BHB levels and the septal-to-blood pool uptake ratio (r = 0.09, p = 0.48), suggesting a metabolic plateau regarding myocardial glucose utilization once adequate ketosis is achieved. These preliminary findings support a threshold effect rather than a dose-dependent relationship between serum BHB levels and myocardial glucose suppression following appropriate dietary preparation.
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Authors Lamis El Harake, Richard Weinberg, Ike Okwuosa, Ryan Avery, Susan Lehrer, Paul C Cremer
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Journal European Heart Journal - Imaging Methods and Practice
Year 2026
DOI
10.1093/ehjimp/qyag161
URL
https://academic.oup.com/ehjimp/advance-article-pdf/doi/10.1093/ehjimp/qyag161/71122066/qyag161.pdf
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