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This dissertation, A Retrospective Study of Tracheal Morphometry in Chinese Adults by Computed Tomography by Fung-ping, Wong, 黃鳳屏, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Objective: To determine the upper airway morphometry of Chinese adults by computed tomography. Study Design: This anatomical study consisted of radiological examination of Chinese adults' upper airway and trachea using computed tomography and image analysis with the help of post-data capture processing software. Materials and Methods: A retrospective review of sixty-five Chinese adults who underwent computed tomography of head and neck region at a regional hospital in Hong Kong was conducted. Computed tomography performed by a Philips Gemini 16? PET/CTPhilips Gemini GXL 16 PET/CT Scanner. Post-data capture processing was performed on GE Advantage Window 4.3 workstation. Measurements were made on standard or oblique reformatted orthogonal planes. Results: 65 consecutive computed tomography scans of the head and neck region of Chinese adults werereviewed. The distance between lower incisor and vocal cords was 144.0mm (12.1 SD) in men and 124.8mm (10.4 SD) in women. The distance between the vocal cord and cricoid ring was 21.5mm (5.8SD) in men and 16.1mm (6.3SD) in women. The distance between the lower incisor and cricoid ring was 165.5mm (10.7SD) in men and 140.9 mm (11.1SD) in women. The distance between the vocal cord and carina was 142.4mm (12.1SD) in men and 130.4mm (12.6SD) in women. The distance between the cricoid ring and carina was 121.0mm (12.7SD) in men and 114.3mm (10.2SD) in women. All these measurements showed statistically significant gender difference. In men, the anteroposterior diameter of cricoid ring was 21.8mm (1.4SD) and the transverse diameter was 17.0mm (1.7SD). In women the anteroposterior diameter of cricoid ring was 17.4mm (1.9SD) and the transverse diameter was 13.4mm (1.8SD). Both were statistically different among men and women. The anteroposterior diameter of trachea of men was 21.1mm (2.9 SD) and the transverse diameter was 17.8mm (2.7 SD). While the corresponding anteroposterior diameter was 16.1mm (2.2 SD) and the transverse diameter was 15.9mm (1.6 SD) in women with statistically significant difference. Using the Pearson correlation, body height but not age of subjects was statistically correlated with all the airway measurements Conclusion: This study reports the tracheal morphometry and dimensions in a Chinese population and their correlation with body height. Details of these measurements will aid airway management and other upper airway procedures in this population. Conclusion: This study reports the tracheal morphometry and dimensions in a Chinese population and their correlation with body height. Details of these measurements will aid airway management and other upper airway procedures in this population. Conclusion: This study reports the tracheal morphometry and dimensions in a Chinese population and their correlation with body height. Details of these measurements will aid airway management and other upper airway procedures in this population. DOI: 10.5353/th_b4827368 Subjects: Airway (Medicine) - Tomography

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