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18F-FDG PET/CT for early detection of embolism and metastatic infection in patients with infective endocarditis

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European Journal of Nuclear Medicine and Molecular Imaging Aims and scope Submit manuscript

Abstract

Purpose

In the acute setting of endocarditis it is very important to assess both the vegetation itself, as well as potential life-threatening complications, in order to decide whether antibiotic therapy will be sufficient or urgent surgery is indicated. A single whole-body scan investigating inflammatory changes could be very helpful to achieve a swift and efficient assessment.

Methods

In this study we assessed whether 18F-FDG can be used to detect and localize peripheral embolism or distant infection. Twenty-four patients with 25 episodes of endocarditis, enrolled between March 2006 and February 2008, underwent 18F-FDG PET/CT imaging on a dedicated PET/CT scanner.

Results

PET/CT imaging revealed a focus of peripheral embolization and/or metastatic infection in 11 episodes (44%). One episode had a positive PET/CT scan result for both embolism and metastatic infection. PET/CT detected seven positive cases (28%) in which there was no clinical suspicion. Valve involvement of endocarditis was seen only in three patients (12%).

Conclusion

PET/CT may be an important diagnostic tool for tracing peripheral embolism and metastatic infection in the acute setting of infective endocarditis, since a PET/CT scan detected a clinically occult focus in nearly one third of episodes.

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Correspondence to Luc Mortelmans.

Additional information

The work was performed in the Department of Nuclear Medicine, University Hospital KU Leuven, Herestraat 49, 3000 Leuven, Belgium. All authors have seen and approved the manuscript.

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Van Riet, J., Hill, E.E., Gheysens, O. et al. 18F-FDG PET/CT for early detection of embolism and metastatic infection in patients with infective endocarditis. Eur J Nucl Med Mol Imaging 37, 1189–1197 (2010). https://doi.org/10.1007/s00259-010-1380-x

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  • DOI: https://doi.org/10.1007/s00259-010-1380-x

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