Kitaoka H, Yumoto T
Department of Internal Medicine, Kitaoka Hospital, Kurayoshi, Japan.
Invest Radiol. 1990 Jul;25(7):813-7. doi: 10.1097/00004424-199007000-00012.
Three-dimensional (3D) reconstruction of the bronchial tree from contiguous scanning of thin-section CT was performed. Automatic extraction of the bronchial inner space was tried by means of thresholding CT numbers, using a left lower lobe obtained at autopsy and fixed in the air-filled state. Anatomic accuracy of the reconstructed 3D image was determined by correlating the image with the sliced lung specimen. Because of the partial volume effects of the bronchial walls, the area in which bronchi could be reconstructed was limited. The smallest reconstructed branch was 1.4 mm in inner diameter, and the spatial relationship among the branches was easily understood.
通过对薄层CT进行连续扫描，对支气管树进行了三维（3D）重建。利用在尸检时获取并固定于充气状态的左下叶，尝试通过阈值化CT值来自动提取支气管内部空间。通过将重建的3D图像与肺切片标本进行对比，确定了重建3D图像的解剖学准确性。由于支气管壁的部分容积效应，可重建支气管的区域受到限制。重建的最小分支内径为1.4毫米，分支之间的空间关系易于理解。
