Non-invasive Intracranial Pressure Monitoring in Brain Tumor Patients

This research protocol focuses on the pre- and post-operative evaluation of ICP using non-invasive methods, particularly in the context of brain tumor resection surgery. By utilizing ocular ultrasound to measure ONSD and ONSD/ETD ratios, this study hypothesizes that the utility of these parameters in monitoring ICP pre- and post-operative periods could be effective. This study aims to evaluate the effectiveness of the ONSD and the ONSD/ETD ratio using ultrasound as a non-invasive method for measuring intracranial pressure pre- and post-operatively in brain tumor patients.