Liu Ting, Han Demin, Wang Jie, Tan Jie, Zang Hongrui, Wang Tong, Li Yunchuan, Cui Shunjiu
Department of Otolaryngology Head and Neck Surgery, Beijing Tong Ren Hospital, Capital Medical University, China.
Acta Otolaryngol. 2012 Mar;132(3):290-8. doi: 10.3109/00016489.2011.637233. Epub 2011 Dec 27.
Computational fluid dynamics (CFD) methods can provide detailed information on airflow characteristics in models of septal deviation. Different locations of septal deviation lead to variation of nasal airflow. Both the location of the septal deviation and the inferior turbinate hypertrophy in the concave side may play an important role in airflow patterns and airflow velocity.
To investigate the airflow patterns and air velocity in different septal deviation models during inspiration, using CFD methods.
Commercial software was used to construct three-dimensional (3D) models of nasal cavities with paranasal sinuses from the computed tomography (CT) scans of 15 patients with septal deviation and 4 controls. Considering the location of the most prominent point of the nasal septum, patients were classified into caudal, anterior, and media deviation groups.
Unlike airflow in the controls, airflow in the septal deviation models showed asymmetry in bilateral nasal cavities. The airflow patterns varied in the convex and concave sides in different septal deviation models. Caudal septal deviation models had the maximal peak velocity, while the the minimal peak velocity was found in the media deviation models. The peak velocity was not always located in the convex side, but was sometimes in the concave side.
计算流体动力学（CFD）方法能够提供鼻中隔偏曲模型中气流特征的详细信息。鼻中隔偏曲的不同位置会导致鼻气流的变化。鼻中隔偏曲的位置以及凹侧下鼻甲肥大可能在气流模式和气流速度方面发挥重要作用。
使用CFD方法研究不同鼻中隔偏曲模型在吸气过程中的气流模式和气流速度。
利用商业软件根据15例鼻中隔偏曲患者和4例对照者的计算机断层扫描（CT）构建带有鼻窦的鼻腔三维（3D）模型。根据鼻中隔最突出点的位置，将患者分为尾侧、前侧和中间偏曲组。
与对照组气流不同，鼻中隔偏曲模型中的气流在双侧鼻腔显示出不对称性。不同鼻中隔偏曲模型中凸侧和凹侧的气流模式各不相同。尾侧鼻中隔偏曲模型的峰值速度最大，而中间偏曲模型的峰值速度最小。峰值速度并不总是位于凸侧，有时也位于凹侧。
