Fig. 1From: Evidence and assessment of parenchymal patterns of ultrasonography for breast cancer detection among Chinese women: a cross-sectional studyUltrasonographic classification. a heterogeneous category (high percentage of fatty tissues), b ductal category (the inner diameters of ducts > 50% of the thick mass of the breast), c Mixed category (the inner diameters of ducts was 50% of the thick mass of the breast), and d Fibrous category (a dense classification of the breast)Back to article page