College of Pharmacy, Jining Medical University, Rizhao, Shandong, China.
J Int Med Res. 2021 May;49(5):3000605211014383. doi: 10.1177/03000605211014383.
Each pulmonary segment is an anatomical and functional unit. However, it is fundamentally difficult to precisely distinguish every pulmonary segment using the conventional pulmonary intersegmental planes from computed tomography images. Building arteriopulmonary segments is likely to be an effective way to identify pulmonary segments.
The thoracic computed tomography images of 40 patients were collected. The anatomic structures of interest were extracted in the transverse, sagittal, and coronal planes using the semi-automated segmentation tools provided by Amira software. The intrapulmonary vessels were subsequently segmented and reconstructed. The distributions of the pulmonary arteries, veins, and bronchi were observed. In patients with pulmonary masses, the mass was also reconstructed.
The three-dimensional reconstructed images showed the branches of the pulmonary artery ramified up to their eighth order covering the entire lung as well as evident intersegmental gaps without pulmonary arteries. The segmental artery was closely accompanied by the segmental bronchi in 486 pulmonary segments (90% of total number of segments). The size and spatial location of the pulmonary mass within a pulmonary segment were also clearly visible.
Demarcation of arteriopulmonary segments can be used to precisely distinguish every pulmonary segment and provide its detailed anatomical structure before pulmonary segmentectomy.
每个肺段都是解剖和功能单位。然而，使用传统的肺段间平面从计算机断层扫描图像中精确区分每个肺段在根本上是困难的。建立肺动脉段可能是识别肺段的有效方法。
收集了 40 名患者的胸部 CT 图像。使用 Amira 软件提供的半自动分割工具，在横断、矢状和冠状面上提取感兴趣的解剖结构。随后对肺内血管进行分割和重建。观察肺动脉、静脉和支气管的分布。在有肺肿块的患者中，也对肿块进行了重建。
三维重建图像显示，肺动脉的分支分支到第八级，覆盖整个肺部，并且在没有肺动脉的情况下有明显的段间间隙。在 486 个肺段（总肺段数的 90%）中，段动脉与段支气管紧密伴行。肺段内肺肿块的大小和空间位置也清晰可见。
肺动脉段的划分可用于在肺段切除术前精确区分每个肺段并提供其详细的解剖结构。
