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Open Access Short report

Numerical analysis of airflow alteration in central airways following tracheobronchial stent placement

Chien-Yi Ho12, Hsiu-Mei Liao3, Chih-Yen Tu45*, Chih-Yang Huang3, Chuen-Ming Shih67, Min-Ying Lydia Su8, Jeon-Hor Chen89* and Tzu-Ching Shih10*

Author Affiliations

1 Graduate Institute of Chinese Medicine, School of Chinese Medicine, China Medical University, Taichung, Taiwan

2 Department of Family Medicine, China Medical University Hospital, Taichung, Taiwan

3 Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan

4 Division of Chest Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, 40402, Taiwan

5 Department of Life Science, National Chung Hsing University, Taichung, Taiwan

6 Department of Respiratory Therapy, China Medical University, Taichung, Taiwan

7 Preventive Medicine Center, China Medical University Hospital, Taichung, Taiwan

8 Tu and Yuen Center for Functional Onco-Imaging, Department of Radiological Science, University of California, Irvine, CA, 92697, USA

9 Department of Radiology, China Medical University Hospital, Taichung, Taiwan

10 Department of Biomedical Imaging and Radiological Science, College of Health Care, China Medical University, Taichung, 40402, Taiwan

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Experimental Hematology & Oncology 2012, 1:23  doi:10.1186/2162-3619-1-23

Published: 27 August 2012

Abstract

The computational fluid dynamics method, which provides an estimation of the pressure drop in the airway before and after the stent implantation, is proposed in this study. This method is based on the finite volume model. The pressure field was solved by the Navier-Stokes equations. The proposed methodology was evaluated in seven health people (control group) and in fourteen patients who were assigned in two groups, in which one was tracheal stenosis and the other was bronchial stenosis. The results showed that the pressure drop after tracheal stent implantation became significantly smaller. For bronchial stent implantation cases, the airway resistance improved insignificantly.