Histogram Analysis and Visual Heterogeneity of Diffusion-Weighted Imaging with Apparent Diffusion Coefficient Mapping in the Prediction of Molecular Subtypes of Invasive Breast Cancers

Table 3

Visual classification of molecular subtypes of breast cancer into low and high heterogeneity on diffusion-weighted imaging (DWI) by the two readers.

Molecular subtypes	Reader 1		Reader 2
	Low heterogeneity	High heterogeneity	Low heterogeneity	High heterogeneity
Luminal A	24 (49.0%)	25 (51.0%)	23 (46.9%)	26 (53.1%)
Luminal B	4 (50%)	4 (50%)	3 (37.5%)	5 (62.5%)
HER2-enriched	5 (45.5%)	6 (54.5%)	4 (36.4%)	7 (63.6%)
Triple negative	7 (30.4%)	16 (69.6%)	10 (43.5%)	13 (56.5%)

HER2: human epidermal growth factor receptor 2.