Effect of SNB on the QoR in Patients Undergoing Supratentorial Tumor Resection

Inclusion Criteria: * age between 18 and 65; * the diagnosis was supratentorial tumor; * scheduled for elective supratentorial craniotomy with general anesthesia ; * the American Society of Anesthesiologists physical status I-III; Exclusion Criteria: * the BMI≦18kg/m2 or BMI≧30kg/m2; * refusing to sign written informed consent; * anticipated surgery duration is too short (\<2 h) or too long (\>6 h); * liver or kidney dysfunction, severe cardiopulmonary failure or nervous system disease ; * with other malignancies ; * severe hematological disease and / or abnormal coagulation function; * fever, systemic and / or scalp infection; * tumors are metastases, aneurysms, hemangioma, or located in the skull base, or located in functional brain areas such as language and movement; * allergy to any drug used in this study; * a history of craniotomy tumor resection; * preoperative usage of antiinflammatory agents or analgesics; * pregnant women, lactating women, illiterate people, people with cognitive impairment, a history of mental illness, unable to communicate and complete the scale assessment; * patients with severe hemodynamic disturbances or other life-threatening complications during the operation, or those transferred to the intensive care unit (ICU) after surgery.