Alterations in anatomic and functional imaging parameters with repeated FDG PET-CT and MRI during radiotherapy for head and neck cancer: a pilot study.

BMC Cancer · 2015 · PMC4374581 · PMID 25885109

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did not reach statistical significanceno p-value reported

GTV-PET showed a decrease in 5 patients between baseline and the fraction 11 timepoints, but a paradoxical increase in 5 patients between the fraction 11 and fraction 21 timepoints; these percentage changes in metabolic tumour volume did not reach statistical significance.

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