Post Feraheme Infusion MRI for Brain Tumor

Patients with a new diagnosis of high-grade glioma based on MRI, who are considered surgical candidates determined by neurosurgeons or patients with recurrent glioblastoma with the initial diagnosis of glioblastoma (histologic or molecular proof) and recommended for clinically surgical resection may be eligible for this study. Subjects may participate in this study if they are at least 18 years of age. Ferumoxytol-enhanced MRI will be used to quantify tumor-associated macrophages. This is a non-therapeutic trial in that imaging will not be used to direct treatment decisions. The blood draw is being completed to evaluate cell-free circulating tumor DNA (cfDNA) and cell-free tumor DNA (ctDNA).