Contrast Enhanced Ultrasound in Neurosurgery to Improve Glioma Visualization and Border Demarcation

Inclusion Criteria: * Able to sign and date the consent form * Stated willingness to comply with all study procedures and be available for the duration of the study * Be a male or female aged 18-95 * Have a planned standard of care surgery for presumed primary or known recurrent glioma * WHO performance status \</= 2 (equivalent Karnofsky Performance Status, KPS\>/= 70) * Patient of childbearing potential must have a negative pregnancy test within 14 days of inclusion Exclusion Criteria: * Patient at high risk of surgical site infection (e.g., 2 or more previous craniotomies/neurosurgery within the last 3 months, poor skin condition, and/or previously infected surgical field, or any other condition that is of increased infectious risk in the opinion of the neurosurgeon) * Known history of hypersensitivity reactions to perflutren lipid microsphere components or to any of the inactive ingredients in the contrast agent. * Patient with known or suspected active or chronic infections. * Patient with known significant cardiac disease, known to have right-to-left shunts, severe pulmonary hypertension (pulmonary artery pressure \> 90 mm Hg), uncontrolled systemic hypertension, or adult respiratory distress syndrome. * Pregnant, or breastfeeding patient. * Patient with known sickle cell disease. * Any other serious patient medical or psychological condition that may interfere with adequate and safe delivery of treatment and care. * Patients under guardianship, curatorship, under le…