Imaging to FEM Mesh Generation Pipeline

Semi-automatic image segmentation	Hexahedral Mesh Generation
volume rendering of anatomical data with FEM mesh	Imaging to Mesh Generation Pipeline

Top Left. Semi-automatic segmentation techniques use image gradients to trace the boundary of the prostate. A series of axial images are segmented. Every 3-5 images are segmented and used to generate a 3d surface representation of the anatomy. Top Right. A volumetric FE mesh is generated by intersecting a structured grid with the 3D surface as the boundary. The unstructured grid is generated by pulling, smoothing, and pillowing the subset unstructured hexahedral elements to conform to the boundary of the anatomy. Bottom Left. The resulting hexahedral mesh is shown registered to a volume rendering of the canine anatomy in the prostate region. Bottom Right. A schematic of the Imaging-to-FEM mesh pipeline is shown. The hexahedral mesh shown has distinct regions for the prostate and laser applicator.

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