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Diagnostic yield of 18F-FDG PET/CT in suspected diagnosis of vascular graft infection: A prospective cohort study. 2020

Hans Bowles, and Juan Ambrosioni, and Gaspar Mestres, and Marta Hernández-Meneses, and Nuria Sánchez, and Jaime Llopis, and Xavier Yugueros, and Manel Almela, and Asunción Moreno, and Vicenç Riambau, and David Fuster, and Jose M Miró, and
Nuclear Medicine Department, Hospital Clínic i Provincial de Barcelona, Villarroel, 170, 08036, Barcelona, Spain.

Prosthetic vascular graft infection (PVGI) is a severe complication associated with high morbidity and mortality. Clinical diagnosis is complex, requiring image testing such as CT angiography or leukocyte scintigraphy, which has considerable limitations. The aim of this study was to know the diagnostic yield of PET/CT with 18F-Fluorodeoxyglucose (18F-FDG) in patients with suspected PVGI. We performed a prospective cohort study including 49 patients with suspected PVGI, median age of 62 ± 14 years. Three uptake patterns were defined following published recommendations: (i) focal, (ii) patched (PVGI criteria), and (iii) diffuse (no PVGI criterion). Sensitivity, specificity, and positive and negative predictive values for 18F-FDG-PET/CT were 88%, 79%, 67%, and 93%, respectively. 18F-FDG-PET/CT identified 14/16 cases of PVGI showing a focal (n = 10) or patched pattern (n = 4), being true negative in 26/33 cases with either a diffuse pattern (n = 16) or without uptake (n = 10). Five of the seven false-positive cases (71%) showed a patched pattern and all coincided with the application of adhesives for PVG placement. 18F-FDG-PET/CT is a useful technique for the diagnosis of PVGI. A patched pattern on PET/CT in patients in whom adhesives were applied for prosthetic vascular graft placement does not indicate infection.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011446 Prospective Studies Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group. Prospective Study,Studies, Prospective,Study, Prospective
D001807 Blood Vessel Prosthesis Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels. Vascular Prosthesis,Blood Vessel Prostheses,Tissue-Engineered Vascular Graft,Graft, Tissue-Engineered Vascular,Grafts, Tissue-Engineered Vascular,Prostheses, Blood Vessel,Prostheses, Vascular,Prosthesis, Blood Vessel,Prosthesis, Vascular,Tissue Engineered Vascular Graft,Tissue-Engineered Vascular Grafts,Vascular Graft, Tissue-Engineered,Vascular Grafts, Tissue-Engineered,Vascular Prostheses,Vessel Prostheses, Blood,Vessel Prosthesis, Blood
D002318 Cardiovascular Diseases Pathological conditions involving the CARDIOVASCULAR SYSTEM including the HEART; the BLOOD VESSELS; or the PERICARDIUM. Adverse Cardiac Event,Cardiac Events,Major Adverse Cardiac Events,Adverse Cardiac Events,Cardiac Event,Cardiac Event, Adverse,Cardiac Events, Adverse,Cardiovascular Disease,Disease, Cardiovascular,Event, Cardiac
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000072078 Positron Emission Tomography Computed Tomography An imaging technique that combines a POSITRON-EMISSION TOMOGRAPHY (PET) scanner and a CT X RAY scanner. This establishes a precise anatomic localization in the same session. CT PET,CT PET Scan,PET CT Scan,PET-CT,PET-CT Scan,Positron Emission Tomography-Computed Tomography,CT PET Scans,CT Scan, PET,CT Scans, PET,PET CT Scans,PET Scan, CT,PET Scans, CT,PET-CT Scans,Scan, CT PET,Scan, PET CT,Scan, PET-CT,Scans, CT PET,Scans, PET CT,Scans, PET-CT
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D012680 Sensitivity and Specificity Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed) Specificity,Sensitivity,Specificity and Sensitivity

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