Fig. 4

Axial dynamic contrast-enhanced MRI, c map (stiffness) and φ map (viscosity) at four time points in two breast cancer patients receiving neoadjuvant chemotherapy. (A) Patient 1: A 63-year-old woman who received neoadjuvant treatment for clinical stage IIIc triple-negative breast cancer and did not achieve pathologic complete response. (B) Patient 2: A 57-year-old woman who received neoadjuvant treatment for clinical stage IIIb human epidermal growth factor receptor-2–enriched cancer and achieved pathologic complete response. DCE = dynamic contrast-enhanced, NAC = neoadjuvant chemotherapy