腫瘍の位置提示ナビゲーションシステムへの応用を目的とした肺の虚脱シミュレーション

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  • Collapse Simulation of Lung for System to Navigate Tumor Position
  • シュヨウ ノ イチ テイジ ナビゲーション システム エ ノ オウヨウ オ モクテキ ト シタ ハイ ノ キョダツ シミュレーション

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It is required to collapse a lung in VATS (video-assisted thoracic surgery). The tumor position is displaced corresponding to ling collapse. Then, navigation system, which presents the tumor position for a surgeon without any palpation process, may be effective for VATS. The purpose of this study is to develop the navigation system using the collapse simulation of lung. This paper shows a collapse simulation with a loaf lung, which has no lobatum, as a first step of this study. First, we obtained and modeled the material properties of hog lung from the data obtained by rheometer. The Zener's model was used to represent the viscoelastic properties of lung from the analysis of the data. Next, the biomechanical model of lung was developed based on Finite Element Method. The collapse simulation was carried out using the model. The analysis result shows the lung model was collapsing and the deformation had the similar tendency to real lung.

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