3T MRI Biomarkers of Glioma Treatment Response

PRIMARY OBJECTIVES: I. To correlate treatment-induced changes in quantitative MRI-based biomarkers-specifically, those sensitive to tumor protein content (amide proton transfer asymmetry \[APTasym\] from chemical exchange saturation transfer \[CEST\]), cellularity (apparent diffusion coefficient \[ADC\] from diffusion-weighted imaging \[DWI\]), and blood flow (volume transfer constant \[K\^trans\] from dynamic contrast-enhanced \[DCE\]; cerebral blood flow \[CBF\] from dynamic susceptibility contrast \[DSC\])-with treatment-induced changes in tumor size, measured via standard anatomic MRI. II. To correlate treatment-induced changes in the above quantitative MRI endpoints with patient progression-free survival (PFS). OUTLINE: Patients undergo measurement of tumor protein content using CEST-MRI, cellularity using DWI-MRI, and blood flow using DCE-MRI and DSC-MRI within 2 weeks of treatment and at 2 and 4 weeks after initiation of treatment.