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3-D segmentation of knee cartilages. Images from a knee minimally affected by osteoarthritis shown on the left. Severe cartilage degeneration shown on the right. (a), (b) Original images. (c), (d) The same slice with bone/cartilage segmentation. (e), (f) Cartilage segmentation shown in 3-D, note the cartilage thinning and “holes” in panel (f).
