Three-dimensional path planning for virtual bronchoscopy
Three-dimensional path planning for virtual bronchoscopy
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DOI：
10.1109/tmi.2004.829332
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发表时间：
2004-11-01
影响因子：
10.6
通讯作者：
Higgins, WE
中科院分区：
文献类型：
--
作者：
Kiraly, AP;Helferty, JP;Higgins, WE
多探测器计算机断层扫描（MDCT）扫描仪提供胸部的大的高分辨率三维（3-D）图像。MDCT扫描与支气管镜检查联合使用时，为肺癌评估提供了一种最先进的方法。我们一直在构建和验证肺癌评估系统，该系统可以进行虚拟支气管镜三维MDCT图像分析和后续图像引导支气管镜检查。然而，使用该系统需要合适的路径规划方法。我们描述了一种快速，强大的方法计算一组3-D气道树路径的MDCT图像。该方法首先定义一个给定的分割的3-D胸部图像的骨架，然后执行多级细化的骨架，以达到最终的树结构。该树由一系列路径和分支结构数据组成，适用于气道定量分析和平滑的虚拟导航。一个先前设计的路径规划方法，使用一组人类MDCT图像的方法的比较，说明了该方法的有效性。结果也提出了人类肺癌的评估和指导支气管镜检查。
Multidetector computed-tomography (MDCT) scanners provide large high-resolution three-dimensional (3-D) images of the chest. MDCT scanning, when used in tandem with bronchoscopy, provides a state-of-the-art approach for lung-cancer assessment. We have been building and validating a lung-cancer assessment system, which enables virtual-bronchoscopic 3-D MDCT image analysis and follow-on image-guided bronchoscopy. A suitable path planning method is needed, however, for using this system. We describe a rapid, robust method for computing a set of 3-D airway-tree paths from MDCT images. The method first defines the skeleton of a given segmented 3-D chest image and then performs a multistage refinement of the skeleton to arrive at a final tree structure. The tree consists of a series of paths and branch structural data, suitable for quantitative airway analysis and smooth virtual navigation. A comparison of the method to a previously devised path-planning approach, using a set of human MDCT images, illustrates the efficacy of the method. Results are also presented for human lung-cancer assessment and the guidance of bronchoscopy.