Please assess the completion status of the following clinical trial:

Trial Title: Cerebral Blood Perfusion Changes After General Anesthesia for Craniotomy

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* American Society of Anesthesia (ASA) physical status I or II~* Scheduled for selective supratentorial tumor removal surgery or major abdominal surgery.~Exclusion Criteria:~* Patients with evidence of systemic hypertension, intracranial hypertension, cerebrovascular diseases, other coexisting medical conditions likely to affect cerebral autoregulation.~* Preoperatively planned delayed tracheal extubation.~* Pregnant or nursing women

- Gender: ALL
- Minimum Age: 25 Years
- Maximum Age: 60 Years
- Healthy Volunteers: f

Study Arms:
- Patients undergoing craniotomy (Type: EXPERIMENTAL): Patients undergoing craniotomy who are scheduled for selective supratentorial tumor removal surgery will be randomly chosen and recruited.~Transcranial Doppler (TCD) measures,jugular venous bulb catheterization, radial artery catheterization, and tumor removal surgery under general anesthesia will be performed.
- Patients undergoing abdominal surgery (Type: ACTIVE_COMPARATOR): Randomly chosen patients undergoing selective abdominal surgery. Transcranial Doppler (TCD) measures,radial artery catheterization, and major abdominal surgery under general anesthesia will be performed.

Based on this trial design, predict the completion outcome and termination type (if applicable).