Breast cancer molecular subtypes are indicators of disease free and overall survival. This study aimed to investigate whether quantitative radiomic features extracted from MRI images are associated with molecular subtypes of breast cancer. 135 women diagnosed with invasive breast cancer were enrolled and divided into 3 groups as follow: triple-negative vs non–triple-negative, HER2-enriched vs non–HER2-enriched, and luminal (A + B) vs nonluminal. A machine learning scheme was employed for the classification. The mean AUC of the three models are 0.76, 0.85 and 0.73, respectively. There is a moderate association between tumour molecular biomarkers and radiomic features extracted from MRI images.
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