PURPOSE: Cerebrovascular abnormalities are intricately involved in gliomas. While static cerebrovascular properties such as cerebral blood flow, volume, and permeability have been extensively studied, dynamic vascular parameters have not been fully understood. This study aimed to characterize the vascular responses to CO METHODS: In 15 glioma patients, concomitant CO RESULTS: Visual inspection suggested that reliable O CONCLUSIONS: Gliomas are associated with abnormal CO