Abstract: Breast cancer is the most common malignancy tumor with the highest incidence of female in the world,and it is also the main cause of female death due to cancer.Neoadjuvant chemotherapy(NAC)can reduce the stage of breast cancer,shrink the tumor,and even make the lesions reach pathological complete response(pCR),and it is widely used in the comprehensive treatment of breast cancer.Because patients have different response to treatment,the timely and accurate evaluation of NAC efficacy has become the focus of clinicians′ attention and efforts to solve.Routine imaging examination methods such as mammography(MG),ultrasound,PET-CT and magnetic resonance imaging(MRI)have been widely used to evaluate the efficacy of NAC in breast cancer,and each imaging examination has advantages and disadvantages.This article reviews the research progress of routine imaging examination for predicting the prognosis of breast cancer patients and the efficacy of NAC.

Key words: Breast cancer, Neoadjuvant chemotherapy, Mammography, Ultrasound, Magnetic resonance imaging, PET-CT