[18F]Fluciclovine and [18F]FLT PET/CT Assessment of Primary High-Grade Brain Tumors

PET exams of \[18F\]FLT will be acquired in each patient at up to three time points: (1) prior to any tumor-directed therapy, either prior to surgery or immediately after surgery providing a complete surgical resection was not performed and confirmed by a post-operative contrast MRI scan where residual tumor \> 1.0 cm in diameter was present and prior to any tumor-directed therapy; (2) at the conclusions of the initial (\~6-8 weeks) chemoradiotherapy; and (3) patients with MRI-documented possible recurrence/progression versus treatment effect (pseudoprogression) within 6 months from the time of completion of chemoradiation.

PET exams of \[18F\]Fluciclovine will be acquired in each patient at up to three time points: (1) prior to any tumor-directed therapy, either prior to surgery or immediately after surgery providing a complete surgical resection was not performed and confirmed by a post-operative contrast MRI scan where residual tumor \> 1.0 cm in diameter was present and prior to any tumor-directed therapy; (2) at the conclusions of the initial (\~6-8 weeks) chemoradiotherapy; and (3) patients with MRI-documented possible recurrence/progression versus treatment effect (pseudoprogression) within 6 months from the time of completion of chemoradiation.