| 18F-Fluorodeoxyglucose PET/CT in the evaluation of large-vessel vasculitis: diagnostic performance and correlation with clinical and laboratory parameters. | |
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MedLine Citation:
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PMID: 21385914 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Objectives: To investigate the diagnostic performance of (18)F-fluorodeoxyglucose positron emission tomography ((18)F-FDG PET)/CT in patients with suspected large-vessel vasculitis and its potential to evaluate the extent and activity of disease. Methods: 78 consecutive patients (mean age 63 years; 53 females) with suspected large-vessel vasculitis were evaluated with (18)F-FDG PET/CT.( 18)F-FDG uptake in the aorta and major branches was visually graded using a four-point scale and quantified with standardised uptake values (SUV(max)). According to clinical diagnosis, patients were classified into three groups: (a) steroid-naïve, large-vessel vasculitis (16 patients), (b) vasculitis on steroid treatment (18 patients) and (c) no evidence of vasculitis (44 patients). Analysis of variance and linear regression were used to investigate the association of (18)F-FDG uptake with clinical diagnosis and inflammatory markers. Results: (18)F-FDG PET/CT was positive (visual uptake ≥2; equal or greater than liver) in patients with steroid-naïve, large-vessel vasculitis. The thoracic aorta, the carotid and subclavian arteries, were most frequently involved. In these patients, SUV(max) values were significantly higher than in the other groups (ANOVA; p < 0.05). Linear regression showed a significant positive association (b coefficients: 0.018-0.02; p < 0.05) between SUV(max) of the thoracic aorta and inflammatory markers in patients with vasculitis (Groups a and b). Patients on steroid treatment showed low visual scores (uptake <2) and significantly lower SUV(max) values than steroid-naïve patients. Conclusion: (18)F-FDG PET/CT can detect the extent and activity of large-vessel vasculitis in untreated patients and is unreliable in diagnosing vasculitis in patients on steroids. |
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Authors:
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N D Papathanasiou; Y Du; L J Menezes; A Al-Muhaideb; M Shastry; H Beynon; J B Bomanji |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-8 |
Journal Detail:
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Title: The British journal of radiology Volume: - ISSN: 1748-880X ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-3-9 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0373125 Medline TA: Br J Radiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Institute of Nuclear Medicine, University College Hospital, London, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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