Non-invasive Glioma Characterization Through Molecular Imaging

This study is using a special type of brain scan (combining PET and MRI imaging) to better understand the biology of gliomas (a type of brain tumor) before surgery, with the goal of helping doctors diagnose and treat these tumors more accurately without needing to rely solely on tissue samples. **You may be eligible if...** - You are 18 years or older - You have a suspected or confirmed glioma (brain tumor) - You are already scheduled for a medically necessary biopsy or surgery to remove or sample your brain tumor **You may NOT be eligible if...** - You cannot give your own informed consent - You are under 18 years old - You are pregnant - You cannot have an MRI scan (for example, if you have a pacemaker or are severely claustrophobic) Talk to your doctor to see if this trial is right for you.