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Maps of disjoint regions whose pixels satisfied the local shape-based conditions superimposed on the rotated version of mammogram with a malignant mass (indicated by the arrow). Results obtained with (a,b,c) and without (d,e,f) defining the PNRA. a,d Areas satisfying conditions K > 0 and H < 0 and with CN < 3. b,e Candidates after rejection of small regions. c,f Final candidate. The result in c is the desired response
