Added Value of Semi-quantitative Analysis of [18F]FDG PET/CT for the Diagnosis of Device-related Infections in Patients with a Left Ventricular Assist Device

Overview

Journal Eur Heart J Cardiovasc Imaging

Publisher Oxford University Press

Specialties Cardiology & Vascular Diseases
Radiology

Date 2022 Dec 27

PMID 36573930

Authors

Derk Ten Hove

Ali R Wahadat

Riemer H J A Slart

Marjan Wouthuyzen-Bakker

Gianclaudio Mecozzi

Kevin Damman

Hester Witteveen

Kadir Caliskan

Olivier C Manintveld

Bhanu Sinha

Ricardo P J Budde

Andor W J M Glaudemans

Affiliations

Soon will be listed here.

Abstract

Aims: Left ventricular assist devices (LVADs) improve quality of life and survival in patients with advanced heart failure, but device-related infections (DRIs) remain cumbersome. We evaluated the diagnostic capability of [18F]FDG PET/CT, factors affecting its accuracy, and the additive value of semi-quantitative analysis for the diagnosis of DRI.

Methods And Results: LVAD recipients undergoing [18F]FDG PET/CT between 2012 and 2020 for suspected DRI were retrospectively included. [18F]FDG PET/CT was performed and evaluated in accordance with EANM guidelines. The final diagnosis of DRI, based on multidisciplinary consensus and findings during surgery, whenever performed, was used as the reference for diagnosis. 41 patients were evaluated for 59 episodes of suspected DRI. The clinical evaluation established driveline infection in 32 (55%) episodes, central device infection in 6 (11%), and combined infection in 2 (4%). Visual analysis of [18F]FDG PET/CT achieved a sensitivity and specificity for driveline infections of 0.79 and 0.71, respectively, whereas semi-quantitative analysis achieved a sensitivity and specificity of 0.94 and 0.83, respectively. For central device component infection, visual analysis of [18F]FDG PET/CT achieved a sensitivity and specificity of 0.75 and 0.60, respectively. Semi-quantitative analysis using SUVratio achieved a sensitivity and specificity of 1.0 and 0.8, respectively. The increase of specificity for central component infection was statistically significant (P = 0.05).

Conclusions: [18F]FDG PET/CT reliably predicts the presence of DRI in LVAD recipients. Semi-quantitative analysis may increase the specificity of [18F]FDG PET/CT for the analysis of central device component infection and should be considered in equivocal cases after visual analysis.

Citing Articles

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