Dataset for publication "Spectral graph theory efficiently characterises ventilation heterogeneity in airway networks".

This directory contains files for the tree networks used in the manuscript "Spectral graph theory efficiently characterises ventilation heterogeneity in airway networks" by C Whitfield et al. Publication details to follow. Each folder contains the network as labelled in the paper in two formats:<br> - .vtk format<br> - plain text format where it is split into 3 files with suffixes .branches .nodes and .termnodes<br> - The .nodes file has 4 columns, the first is the node index and the other 3 are the (x,y,z) node coordinates in mm<br> - The .branches file has 4 columns (ignoring extra info in following columns), which are the edge index, node in index, node out index and radius (mm)<br> - The .termnodes file contains a list of node indices corresponding to terminal nodes of the tree. Each folder also contains the CT centerline data (identified by the suffix _CT) in .vtk format.本目录包含C·惠特菲尔德（C Whitfield）等人所著论文手稿《频谱图论高效表征气道网络通气异质性》（Spectral graph theory efficiently characterises ventilation heterogeneity in airway networks）中使用的气道树网络相关文件，该论文的正式出版信息待后续公布。每个子文件夹均收录了论文中标记的对应气道网络，提供两类格式的存储文件： - .vtk格式文件 - 纯文本格式文件，该格式拆分为三个独立文件，后缀分别为.branches、.nodes与.termnodes： - .nodes文件包含4列数据，第一列为节点索引，其余三列为以毫米（mm）为单位的节点(x,y,z)空间坐标 - .branches文件包含4列核心数据（忽略后续列中的额外信息），依次为边索引、入节点索引、出节点索引以及以毫米（mm）为单位的分支半径 - .termnodes文件存储了一组节点索引列表，对应该气道树网络的终末节点 此外，每个子文件夹还包含后缀为_CT的CT中心线数据，格式为.vtk格式。