Work

18F-FDG-PET/CT Scan for Detection of Large Vessel Involvement in Giant Cell Arteritis: Arteser Spanish Registry

Year: 2024
Type: article
Study design: Observational Study
Abstract: ABSTRACT Background: Positron emission tomography/computed tomography (PET/CT) using 18-fluorodeoxyglucose (18F-FDG) is crucial for large vessel vasculitis (LVV) assessment in giant cell arteritis (GCA)Objectives: We aimed to determine the utility of 18F-FDG-PET/CT scan in detecting LVV in GCA. Method: ARTESER registry, is a large multicenter, retrospective, observational study, promoted by the Spanish Society of Rheumatology. It included patients newly diagnosed GCA across country from June 1st, 2013 to March 29th, 2019​​. Patients were entered if diagnosed with incidental GCA, and specific criteria including: ACR 1990 criteria, positive imaging results, or expert clinical opinion​​. Differences between patients with positive and negative 18F-FDG-PET/CT were analyzed using a bivariate model. A regression model assessed associations in positive scans, and ROC analysis evaluated the sensitivity and specificity of the 18F-FDG-PET/CT scan for newly diagnosed GCA​​. Results: Out of 1675 GCA patients in the registry, 377 met the inclusion criteria of having an 18F-FDG-PET/CT scan. The majority were diagnosed with a cranial GCA phenotype, and 65% had LVV. Cardiovascular disease, diabetes, and older age had a negative association with a positive scan outcome​​. The OR for having a positive 18F-FDG-PET/CTC scan was lower as days went by. Depending on the cumulative dosage of glucocorticoids, 18F-FDG-PET/CT scan showed an AUC of 0.74.Conclusions: Younger patients showed a higher probability of presenting LVV as detected by 18F-FDG-PET/CT scan. The timing of the examination and the cumulative dosage of glucocorticoids influenced the likelihood of a positive result, with earlier tests being more likely to detect inflammation​​. Key indexing terms: 18F-FDG-PET/CT scan, large vessel vasculitis, aortitis, giant cell arteritis, imaging, nuclear medicine. KEY POINTS• What is already known on this topic:- Novel imaging methods, notably 18F-FDG-PET/CT, greatly improve GCA extracranial phenotype diagnosis, especially in detecting aorta and major branches involvement.• What this study adds:- Younger GCA patients show higher LVV risk.- Integrating early 18F-FDG-PET/CT scans enhances inflammation detection, while considering the impact of glucocorticoid dosage on scan outcomes for comprehensive assessmentHow this study might affect research, practice or policy: - Future research is needed to develop imaging protocols in different clinical scenarios.
Language: English
Field: Medicine
Open Access status: gold
Estimated APC paid: $2,955
OpenAlex ID: W4403517457
FWCI: 0.507
Cites: 37
Cited by: 2
Related to: 10