经眶窗检测颈内动脉虹吸段时，其流速受瘘口所在位置的影响，观察颅内盗血情况可粗略估价瘘口大小。
When internal carotid siphon was investigated via orbital window, its velocity changed with the position of fistula orifice which can be estimated roughly by extent of intracranial stolen blood.
结论：眶上匙孔入路联合鼻内镜置双管引流治疗额窦骨瘤，术野清晰，对患者创伤小，出血少，面部不留疤痕，额窦口引流通畅，是一种较好的治疗方法。
Conclusion: This way is method with a clear operative area, minimally invasive, little blood loss, well drainage and no operative scars left on the face.
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