Clinical value of [18F]FDG-PET/CT and 3D-black-blood 3T-MRI for the diagnosis of large vessel vasculitis and single-organ vasculitis of the aorta.
Autor: Wenter, Vera; Sommer, Nora N.; Kooijman, Hendrik; Maurus, Stefan; Treitl, Marcus; Czihal, Michael; Dechant, Claudia; Unterrainer, Marcus; Albert, Nathalie L.; Treitl, Karla M.
Publication year: 2020
The quarterly journal of nuclear medicine and molecular imaging : official publication of the Italian Association of Nuclear Medicine (AIMN) [and] the International Association of Radiopharmacology (IAR), [and] Section of the Society of…
issn:1827-1936 1824-4785
doi: 10.23736/S1824-4785.18.03036-4
Abstract:
BACKGROUND: We aimed to investigate the clinical value of a 3D-T1w turbo-spin-echo (TSE) sequence and [18F]fluorodeoxyglucose positron emission tomography/computed tomography ([18F]FDG-PET/CT) for the diagnosis of active large vessel vasculitis (LVV) and single-organ vasculitis (SOV) of the aorta. METHODS: Twenty-four patients with suspected vasculitis who underwent MRI and PET/CT were retrospectively evaluated. MRI was analyzed for concentric contrast enhancement and wall thickening, and flow artifact intensity (4-point-scales). PET/CT analysis comprised qualitative, quantitative and semiquantitative methods. Imaging findings were correlated with final diagnosis derived from the clinical follow-up data. RESULTS: Fifteen of 24 patients had a clinically confirmed active vasculitis, two had inactive vasculitis and 7 no vasculitis. [18F]FDG-PET/CT and 3D-T1w TSE-MRI revealed both a high diagnostic accuracy of 88% and 83%, respectively. In patients in whom both PET/CT and MRI showed concordant findings (19 patients), the accuracy increased to 95% with a high positive predictive value (92%) and negative predictive value (100%); thus, a correct diagnosis was obtained in 18 of 19 patients. Among the five patients with discordant findings PET/CT correctly identified the two patients without active vasculitis while rated false positive on MRI. Of the three remaining patients with active vasculitis, two were correctly identified by MRI and one by PET/CT. CONCLUSIONS: 3D-T1w TSE-MRI and [18F]FDG-PET/CT are both useful in the diagnosis of active vasculitis with high diagnostic accuracies. The diagnostic accuracy was even optimized by combining the two analysis methods. Therefore, there might be substantial potential for the application of whole-body hybrid PET/MRI in the evaluation of vasculitis in future studies.
Language: eng
Rights:
Pmid: 29307167
Tags: Humans; Aged; Female; Male; Adult; Middle Aged; Retrospective Studies; Young Adult; *Magnetic Resonance Imaging; *Fluorodeoxyglucose F18; *Imaging, Three-Dimensional; Aorta/*diagnostic imaging; Vasculitis/*diagnostic imaging
Link: https://pubmed.ncbi.nlm.nih.gov/29307167/
