1. Cohort A (pre-surgical): Suspected LGG (oligodendroglioma or astrocytoma), based on any combination of histological, molecular, radiological, and/or clinical findings; or
2. Cohort B (post-surgical): IDH1/2-mutant or IDH-wildtype (WT) low-grade glioma candidate for observation
3. No contraindications to MRI;
4. eGFR \> 30 ml/min;
5. No prior chemotherapy or radiation therapy;
6. No need for upfront treatment (surgery, chemotherapy, and/or radiation therapy)
7. Followed at either Sunnybrook Health Sciences Centre or at St Michael's Hospital
You may not be if
1. Need for upfront post-surgical treatment with either chemotherapy and/or radiation therapy
