Research on Ultrasound Diagnostic Criteria for Intracranial and Extracranial Arterial Serial Stenosis

All individuals are anesthetized, with local or general anesthesia depending on the patient's level of cooperation. During the surgery, heparin must be injected intravenously to control the activated clotting time between 250-300 seconds. The surgery is performed via the femoral artery, and the choice of stent type and size, as well as any required equipment, are determined by the intervention personnel themselves.