Measurement and Analysis of the Tracheobronchial Tree in Chinese Population Using Computed Tomography |
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Authors: | Weidong Mi Changsheng Zhang Hong Wang Jiangbei Cao Changtian Li Li Yang Fang Guo Xianwang Wang Tie Yang |
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Affiliation: | 1. Anesthesia and Operation Center, Chinese PLA General Hospital, Beijing, 100853, China.; 2. Department of Ultrasound, The Southern Building, Chinese PLA General Hospital, Beijing, 100853, China.; 3. Department of Radiology, Chinese PLA General Hospital, Beijing, 100853, China.; 4. Department of Anesthesia, The 309th hospital of Chinese PLA, Beijing, 100096, China.; University of Pennsylvania, UNITED STATES, |
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Abstract: | ObjectiveTo ascertain accurate measurements of, and the relationships between, the normative parameters of the tracheobronchial trees in the Chinese population using multi-slice spiral computed tomography (CT) and multi-planar reconstruction (MPR).Materials and MethodsMeasurements were performed on 2107 patients who underwent thoracic CT scans in the PLA General Hospital. The lengths of the trachea and the main stem bronchi, and the sizes of the subcarinal angle were obtained through CT or MPR imaging. Multi-variance analyses were performed to detect potential correlations between obtained parameters.ResultsThe mean length of the trachea was 104.9 ± 13.4 mm (107.8 ± 13.2 mm for men and 101.4 ± 12.8 mm for women). The mean lengths of the right and left main stem bronchi were 13.6 ± 4.3 and 48.3 ± 6.5 mm, respectively. The right bronchus angle and the left bronchus angle were 34.9 and 42.5 degrees, respectively. Significant gender differences were found in all the parameters measured except for the angle of the right upper lobe bronchus. There are no statistically significant correlations among these parameters.ConclusionsThe normal reference values and the likely ranges of distribution of the tracheobronchial trees in the Chinese population have been established. Significant gender differences exist in the dimensions of the trachea, with the exception of the Right upper bronchial angle (RUA). |
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