Jiwoong Choi

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A novel algorithm is presented that links local structural variables (regional ventilation and deforming central airways) to global function (total lung volume) in the lung over three imaged lung volumes, to derive a breathing lung model for computational fluid dynamics simulation. The algorithm constitutes the core of an integrative, image-based(More)
Regional deposition of particles in an image-based airway model: Cfd simulation and left-right lung ventilation asymmetry. who were always willing to lend a helping hand and share their thoughts with me. I would also like to thank Dr. Merryn Tawhai and Dr. Eric Hoffman, whose cross-disciplinary work on this project made this study possible. Figure A6:(More)
Recommended Citation Choi, Sanghun. "Structural and functional assessments of normal vs. asthmatic populations via image registration and CFD techniques. ii To Eon Ju and Dahye iii ACKNOWLEDGMENTS The presented work in this thesis could not have been done without the great help of many people. First of all, I am very grateful to my thesis supervisor, Dr.(More)
This study aims to assess regional ventilation, nonlinearity, and hysteresis of human lungs during dynamic breathing via image registration of four-dimensional computed tomography (4D-CT) scans. Six healthy adult humans were studied by spiral multidetector-row CT during controlled tidal breathing as well as during total lung capacity and functional residual(More)
The airflow in a subject-specific breathing human lung is simulated with a multiscale computational fluid dynamics (CFD) lung model. The three-dimensional (3D) airway geometry beginning from the mouth to about 7 generations of airways is reconstructed from the multi-detector row computed tomography (MDCT) image at the total lung capacity (TLC). Along with(More)
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