Objective : We investigated the pattern of glucose uptake in meningiomas using $^{18}F$-fluoro-2-deoxy-D-glucose[FDG] PET/CT. It was hypothesized that the degree of glucose uptake in each tumor could predict the histologic grade. Methods : In 19 patients with meningiomas, the Ki-67 proliferative index, standardized uptake values[SUV] of FDG uptake, tumor to contralateral gray matter ratio[TGR] of SUV, tumor size, edema grade, vascular endothelial growth factor[VEGF] expression, histopathologic grade and the blood supply pattern were assessed. Results : Of the 19 meningiomas, 8 were meningothelial, 1 fibrous, 2 transitional, 1 psammomatous, 2 angiomatous, and 5 atypical. The tumor proliferative index of Ki-67, tumor size, and peritumoral edema were larger in the histopathologic grade-2 meninigiomas than in the grade-1 meningioma group. There were no significant differences in SUV and TGR between two groups. Tumor size and peritumoral edema were significantly larger in VEGF-positive tumors than in negative tumors. Conventional angiography was performed in 12 patients. Dural supply was noted predominantly in 2 patients. Four patients had mainly pial cortical supply patterns. In tumors with more pial supply, VEGF was more frequently positive. There was a significant relation between SUV and Ki-67 and between SUV and peritumoral edema. Conclusion : We found FOG uptake in meningiomas is associated with proliferative potential, however, no clear limits of SUV and TGR can be set to distinguish between grade-1 and grade-2 meningiomas, which makes the assessment of malignancy grade using PET scan metabolic imaging difficult in individual cases.