PRIMARY OBJECTIVES:~I. Determine the therapeutic efficacy of fludeoxyglucose F-18 (18F-FDG) positron emission tomography (PET)-magnetic resonance imaging (MRI) in spine stereotactic radiosurgery (SSRS) treatment planning compared to advanced MRI (aMRI) and conventional MRI (cMRI).~II. Determine the diagnostic accuracy of 18F-FDG PET-MRI in follow-up of patients treated with SSRS.~SECONDARY OBJECTIVES:~I. Analysis of the subset of patients who eventually suffer local treatment failure to determine patterns of failure and potential predictive PET/MRI features at baseline.~II. Analysis of the subset of patients who suffer complications of SSRS (e.g., vertebral compression fracture) to determine potential predictive imaging features.~OUTLINE:~Patients receive fludeoxyglucose F-18 intravenously (IV) over 1 minute, and then undergo PET-MRI over 1 hour, 30 days before radiation therapy, and 3 and 6 months after radiation therapy.
This trial studies how well 18F-FDG PET-MRI works for treatment planning in patients with spine tumors. Diagnostic procedures, such as 18F-FDG PET-MRI may help radiation oncologists plan the best treatment for spine tumors, as well as help in follow-up after radiation therapy.