title: Role of radionuclide imaging for diagnosis of device and prosthetic valve infections.
abstract: Cardiovascular implantable electronic device (CIED) infection and prosthetic valve endocarditis (PVE) remain a diagnostic challenge. Cardiac imaging plays an important role in the diagnosis and management of patients with CIED infection or PVE. Over the past few years, cardiac radionuclide imaging has gained a key role in the diagnosis of these patients, and in assessing the need for surgery, mainly in the most difficult cases. Both18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) and radiolabelled white blood cell single-photon emission computed tomography/computed tomography (WBC SPECT/CT) have been studied in these situations. In their 2015 guidelines for the management of infective endocarditis, the European Society of Cardiology incorporated cardiac nuclear imaging as part of their diagnostic algorithm for PVE, but not CIED infection since the data were judged insufficient at the moment. This article reviews the actual knowledge and recent studies on the use of18F-FDG PET/CT and WBC SPECT/CT in the context of CIED infection and PVE, and describes the technical aspects of cardiac radionuclide imaging. It also discusses their accepted and potential indications for the diagnosis and management of CIED infection and PVE, the limitations of these tests, and potential areas of future research.
authors.affiliation: Jean-François Sarrazin, François Philippon, Department of Cardiology, Institut Universitaire de Cardiologie et Pneumologie de Québec, Laval University, Québec, QC G1V 4G5, Canada.
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Sarrazin
authors.affiliation: Jean-François Sarrazin, François Philippon, Department of Cardiology, Institut Universitaire de Cardiologie et Pneumologie de Québec, Laval University, Québec, QC G1V 4G5, Canada.
authors.forename: François
authors.initials: F
authors.lastname: Philippon
authors.affiliation: Jean-François Sarrazin, François Philippon, Department of Cardiology, Institut Universitaire de Cardiologie et Pneumologie de Québec, Laval University, Québec, QC G1V 4G5, Canada.
authors.forename: Mikaël
authors.initials: M
authors.lastname: Trottier
authors.affiliation: Jean-François Sarrazin, François Philippon, Department of Cardiology, Institut Universitaire de Cardiologie et Pneumologie de Québec, Laval University, Québec, QC G1V 4G5, Canada.
authors.forename: Michel
authors.initials: M
authors.lastname: Tessier
keywords: Device; Endocarditis; Fluorodeoxyglucose; Imaging; Infection; Leukocytes; Positron emission tomography/computed tomography; Prosthetic valve; Radionuclide; Scintigraphy