Abstract
It is known that elderly people's pneumonia caused by swallowing disorder contains high danger of death. However, there is no medical instrument to detect the aspiration. Here, we applied 2D X-ray video fluorography using some care foods to reconstruct 3D geometries of the food bolus. From these geometries, the stress in the bolus was analyzed using a software LS-DYNA. Reasonable swallowing pressure was calculated from the reconstructed bolus model. The maximum swallowing pressure for soft and hard jellies was higher than that for water.
