Magnetic Resonance (MR) Imaging to Determine High Risk Areas in Patients With Malignant Gliomas and to Design Potential Radiation Plans and to Examine Metabolite Changes in Gliomas and Other Solid Tumors

Inclusion Criteria: * Suspected or Histopathologically proven diagnosis of high grade or low glioma or tumor is suspected to harbor an isocitrate dehydrogenase (IDH) mutation * May undergo radiation therapy * Patient and/or guardian is able to provide written informed consent prior to study registration * Age ≥ 18 years old Exclusion Criteria: * Extreme claustrophobia that precludes MRI scan * Known allergic reaction to Gd-DTPA * Any contraindication to gadolinium intravenous contrast as per standard Department of Radiology contrast guidelines * Any absolute contraindication to MRI (e.g., pacemaker, aneurysm clip, tissue expander). * Pregnant or nursing female * Unable to cooperate for MRI and/or radiation therapy planning