Abstract
Three-dimensional bolus geometry was reconstructed from multi-angle 2D images of X-ray video fluolography. The developed method enabled free view angle for the flowing bolus. A mesh model was created from the digitized bolus shape, and was used for FEM analysis. The obtained swallowing pressure approximately agreed with the past result. Applying the same method to a liquid bolus, a mesh model was constructed to analyze the velocity and shear stress. Block fitting technique and data mapping method were used in the FVM analysis. Compression flow was computed for validation, and the results were agreed with the theoretical results for thrust force. In addition, this method enabled the analysis of complicated liquid bolus flow.
