The Airway Length

Airway length was measured as the linear distance between two bifurcations nodes. Note that to optimize the ratio between accuracy and required data, Micro-CT images were generated starting from the base of the trachea to limit the scanned volume. This resulted in a very short trachea in the 3D reconstructed models, consequently automatic measurements of the trachea are not reported.

气道长度以两个分叉节点间的直线距离进行测量。请注意，为在成像精度与所需数据量之间取得最优平衡，显微计算机断层扫描（Micro-CT）图像的采集范围从气管基底部起始，以限制扫描体积。这导致三维重建模型中的气管长度偏短，因此未报告气管的自动测量结果。