18F-FDG-PET/CT for the detection of disease in patients with head and neck cancer treated with radiotherapy.

Autor: Nils Helsen, Dessie Roothans, Bert Van Den Heuvel, Tim Van den Wyngaert, Danielle Van den Weyngaert, Laurens Carp, Sigrid Stroobants
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: PLoS ONE, Vol 12, Iss 8, p e0182350 (2017)
Druh dokumentu: article
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0182350
Popis: OBJECTIVE:The aim of this study is to evaluate the diagnostic performance of FDG-PET/CT for the detection of residual disease after (chemo)radiotherapy in patients with head and neck squamous cell carcinoma (HNSCC) and to evaluate the prognostic value of the FDG-PET/CT findings. METHODS:Patients with HNSCC who underwent FDG-PET/CT after (chemo)radiotherapy were studied retrospectively. RESULTS:104 FDG-PET/CT-scans were performed at a median of 13.2 weeks post-treatment (5.4-19.0 weeks). The diagnostic performance was time dependent with decreasing sensitivity and slightly increasing specificity over time. Sensitivity, specificity, PPV and NPV at 9 months after imaging were 91%, 87%, 77% and 95%, respectively. In a logistic regression model, the odds of a correct FDG-PET/CT increased with 33% every additional week after end of therapy (p = 0.01) and accuracy plateaued after 11 weeks (97%; p
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