Efficacy of shear-wave elastography versus dynamic optical breast imaging for predicting the pathological response to neoadjuvant chemotherapy in breast cancer.

•Performance of SWE, DOBI and tumor size for predicting the NACT response in BC.•SWE, DOBI and tumor size after the second NACT cycle (t2) show the best predictive power.•SWE and DOBI are better than tumor size for predicting the NACT response.•SWE and DOBI have similar power for predicting a favorable response.•SWE performs better than DOBI in predicting NACT resistance.