这台发动机的立体容积是多少？
目的：评价颅内囊性肿瘤经立体定向抽液前后容积变化在伽玛刀治疗中的作用。
Objective: To evaluate the role of volume change after stereotactic aspiration in gamma knife radiosurgery for intracranial cystic tumor.
方法：回顾性分析12例PE患者，均行螺旋CT容积扫描，并在工作站进行图像后处理，获得肺动脉多平面重建图像及三维立体图像。
Methods:12 patients with PE were performed spiral CT volume scanning. Three dimensional and multiplanar images of pulmonary artery were obtained after post procession in the work station.
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