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The aim of this study was to determine the uptake of intravenously administered N-[11CH3]-dimethylaminoparthenolide (DMAPT) into orthotopic 9LSF glioblastoma brain tumors in Fisher 344 rats from positron emission tomography (PET) imaging studies. [11C]methyl iodide (11CH3I) was utilized as a [11C]-labeling reagent to label the precursor methylaminoparthenolide (MAPT) intermediate. From PET imaging...