Airflow and particle deposition simulations in health and emphysema: from in vivo to in silico animal experiments.
Airflow and particle deposition simulations in health and emphysema: from in vivo to in silico animal experiments.
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DOI：
10.1007/s10439-013-0954-8
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发表时间：
2014-04
影响因子：
3.8
通讯作者：
Vignon-Clementel, Irene E.
中科院分区：
文献类型：
--
作者：
Oakes, Jessica M.;Marsden, Alison L.;Grandmont, Celine;Shadden, Shawn C.;Darquenne, Chantal;Vignon-Clementel, Irene E.
关键词：
Image-based in-silico modeling tools provide detailed velocity and particle deposition data. However, care must be taken when prescribing boundary conditions to model lung physiology in health or disease, such as in emphysema. In this study, the respiratory resistance and compliance were obtained by solving an inverse problem; a 0D global model based on healthy and emphysematous rat experimental data. Multi-scale CFD simulations were performed by solving the 3D Navier Stokes equations in an MRI-derived rat geometry coupled to a 0D model. Particles with 0.95 μm diameter were tracked and their distribution in the lung was assessed. Seven 3D-0D simulations were performed: healthy, homogeneous, and five heterogeneous emphysema cases. Compliance (C) was significantly higher (p = 0.04) in the emphysematous rats compared to the healthy rats , while the resistance remained unchanged (p=0.83). There were increases in airflow, particle deposition in the 3D model, and particle delivery to the diseased regions for the heterogeneous cases compared to the homogeneous cases. The results highlight the importance of multi-scale numerical simulations to study airflow and particle distribution in healthy and diseased lungs. The effect of particle size and gravity were studied. Once available, these in-silico predictions may be compared to experimental deposition data.
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影响因子：
4.6
作者：
Choi, Jiwoong;Tawhai, Merryn H.;Lin, Ching-Long
通讯作者：
Lin, Ching-Long
影响因子：
2.2
作者：
Longest, P. Worth;Vinchurkar, Samir
通讯作者：
Vinchurkar, Samir
DOI：
10.1002/cnm.1390
发表时间：
2010-07-01
影响因子：
2.1
作者：
Comerford, A.;Bauer, G.;Wall, W. A.
通讯作者：
Wall, W. A.
DOI：
10.1115/1.4001679
发表时间：
2010-08
期刊：
Journal of biomechanical engineering
影响因子：
--
作者：
Comerford A;Förster C;Wall WA
通讯作者：
Wall WA
DOI：
10.1152/ajpregu.00343.2007
发表时间：
2007-09-01
影响因子：
2.8
作者：
Borzone, Gisella;Liberona, Leonel;Lisboa, Carmen
通讯作者：
Lisboa, Carmen