目的：探讨螺旋CT三维容积重建（VR）成像方法，评价其临床运用范围与价值。
Objective:To study the ways of volume rendering(VR) three-dimensional reconstruction(3D) by spiral CT, and evaluate its clinical applications.
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.
本文研究基于CT容积数据的血管提取与重建方法，并已成功应用于三维血管分析系统。
This thesis deals with vascular extraction and reconstruction algorithms based on ct volume data, leading to successful application to three-dimensional vascular analysis system.
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