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. 2023 Mar 16;44(17):1495–1510. doi: 10.1093/eurheartj/ehad067

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© The Author(s) 2023. Published by Oxford University Press on behalf of the European Society of Cardiology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (https://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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¹⁸F-fluorodeoxyglucose (¹⁸F-FDG) positron emission tomography/computed tomography (PET/CT) scans of a patient with tri-fascicular block and depressed left ventricular (LV) function; cardiac sarcoidosis was verified by endomyocardial biopsy. (A) whole-body PET with ¹⁸F-FDG positive lymph nodes (arrows) and splenic radiotracer accumulation (hollow arrow). (B) 4-chamber PET/CT image showing ¹⁸F-FDG uptake on LV septum, apex, and basal lateral wall (asterisks), on right ventricular free wall (arrow), and on interatrial septum (arrow). (C) Single-photon emission computed tomography ^99mTc-tetrofosmin scans showing perfusion defects (white arrows) on LV septum and apex overlapping areas of ¹⁸F-FDG uptake on PET (mismatch pattern). From top to bottom, the rows represent short-axis, vertical, and horizontal views of the heart.