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目的:探讨左肺上叶肺段在CT图像上的划分。方法:利用Volume Wizard图像后处理工作站对160例成年男性肺部多层螺旋CT图像进行重建,分析左肺上叶肺段及亚段静脉的属支数目类型、配布特点,并依此探寻左肺上叶肺段在CT图像上的划分方法。结果:1.V1+2存在率约为71.2%,V2+3出现率约为28.8%;V4和V5共干形成V4+5,占61.2%,38.8%的V4与V5单独汇入左肺上静脉。2.V1+2干、V1、V2外支、低位V2支、V2上支及V2尖支都可成为前段与尖后段的段间支;V3下部前支、中支、后支、前内支和前外支为上舌段与前段的段间支;V3尖支为前段与尖后段的段间支;V4和V4+5干为上、下舌段的段间支。结论:利用MSCT后处理技术,能够有效辨识肺段静脉及其属支的配布情况,该技术可为肺段的划分提供帮助。
Objective: To investigate the division of upper lung lobes in CT images. Methods: 160 adult male pulmonary MSCT images were reconstructed using the Volume Wizard image post-processing workstation to analyze the types and distribution characteristics of the branches and the distribution of the upper pulmonary lobes and sub-venous veins and to explore the left lung Upper lobes in the CT image segmentation method. V4 and V5 co-formed V4 +5, accounting for 61.2%, 38.8% of V4 and V5 alone into the left lung vein. 2.V1 +2 dry, V1, V2 external support, low V2, V2 and V2 can be apex and apex after the segment of the branch; V3 lower anterior branch, branch, branch, before the Branch and anterolateral branch for the upper segment and anterior segment of the branch; V3 tip branch for the anterior segment and the posterior segment of the branch; V4 and V4 +5 stem for the upper and lower segment of the tongue segment. Conclusion: MSCT postprocessing technique can effectively identify the distribution of pulmonary vein and its branches, which can be helpful for the classification of pulmonary segments.