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(a) Segmentation process of the distal femur based on CTA image. Process is working semiautomatic. Cartilage tissue in the trochlea (red) contains a full sized defect zone. (b) 3D image based on segmentation of CTA data shows a smooth and vivid structure. (c) The segmented 3D image based on 3 T MRI has a stepped and pixelated surface structure.
