According to the BI-RADS 12, morphological and DCE features were independently reviewed by two radiologists (with 8 years and 5 years of experience in breast imaging) without knowledge of the histopathological diagnosis. If the assessments were inconsistent, a consensus was reached by the senior radiologist. The morphological features included tumor size, shape (oval, round or irregular), and margin (circumscribed or non-circumscribed). The DCE features included internal enhancement characteristics (homogeneous or non-homogeneous) and the delayed enhancement features of the kinetic curve (persistent or non-persistent). In addition, age and tumor location were also included.