CAJ | 학술논문

目的：研究人在呼吸过程中，空气中的悬浮颗粒在呼吸道内的沉积方式。方法对1名健康志愿者呼吸道进行进行三维重建，所建模型结构包括鼻腔、口腔、咽腔、喉腔、气管和部分支气管。对呼吸过程中颗粒物在呼吸道内的沉积过程和沉积规律进行数值分析。结果得到呼吸道内的气流速度分布和压力分布，以及固体颗粒在呼吸道内的运动路径和沉积规律。结论呼吸道在过滤空气中悬浮颗粒的功能中发挥着重要作用，鼻腔下鼻甲前端和咽后壁处为颗粒主要沉积部位。
목적：연구인재호흡과정중，공기중적현부과립재호흡도내적침적방식。방법대1명건강지원자호흡도진행진행삼유중건，소건모형결구포괄비강、구강、인강、후강、기관화부분지기관。대호흡과정중과립물재호흡도내적침적과정화침적규률진행수치분석。결과득도호흡도내적기류속도분포화압력분포，이급고체과립재호흡도내적운동로경화침적규률。결론호흡도재과려공기중현부과립적공능중발휘착중요작용，비강하비갑전단화인후벽처위과립주요침적부위。
[ABSTRACT]OBJECTIVETo study the deposition of suspended particles in the respiratory tract during human breathing.METHODSBased on CT data, three dimensional finite element model of an anatomically accurate respiratory tract, including the nasal cavity, oral cavity, pharynx, larynx, trachea and parts of tracheobronchial tree, is established. Numerical analysis for the deposition of suspended particles in the respiratory tract was conducted. RESULTSThe velocity and pressure distributions of airflow in the respiratory tract were obtained, as well as the particles path and their deposition law.CONCLUSION Respiratory tract plays an important role in filtering suspended particles in the air during breathing. The main deposition sites of the particles were at the front of the inferior turbinate and the posterior pharyngeal wall.