Early [18F]FET-PET in gliomas after surgical resection: Comparison with MRI and histopathology

Benjamin Kläsner, Niels Buchmann, Jens Gempt, Florian Ringel, Constantin Lapa, Bernd Joachim Krause

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30 Scopus citations


Background: The precise definition of the post-operative resection status in high-grade gliomas (HGG) is crucial for further management. We aimed to assess the feasibility of assessment of the resection status with early post-operative positron emission tomography (PET) using [18F] O-(2-[18F]-fluoroethyl)-L-tyrosine ([18F]FET). Methods: 25 patients with the suspicion of primary HGG were enrolled. All patients underwent preoperative [18F]FET-PET and magnetic resonance imaging (MRI). Intra-operatively, resection status was assessed using 5-aminolevulinic acid (5-ALA). Imaging was repeated within 72h after neurosurgery. Post-operative [18F]FET-PET was compared with MRI, intra-operative assessment and clinical follow-up. Results: [18F]FET-PET, MRI and intra-operative assessment consistently revealed complete resection in 12/25 (48%) patients and incomplete resection in 6/25 cases (24%). In 7 patients, PET revealed discordant findings. One patient was re-resected. 3/7 experienced tumor recurrence, 3/7 died shortly after brain surgery. Conclusion Early assessment of the resection status in HGG with [18F]FET-PET seems to be feasible.

Original languageEnglish
Article numbere0141153
JournalPLoS ONE
Issue number10
StatePublished - 26 Oct 2015
Externally publishedYes


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