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Figure 3c: Contingency tables at (a) full dose, (b) half dose, and (c) quarter dose averaged across observers indicate the fraction of which the observers scored the images of a given class. The scale to the right of each table shows the fraction of images from a given truth category that were rated in a given category. B = benign mass, C = microcalcification, M = malignant mass, N = normal.
