| CEUS | contrast-enhanced ultrasound |
| pCR | pathologic complete response |
| RFS | recurrence-free survival |
| NAC | neoadjuvant chemotherapy |
| PEAK | the maximum intensity |
| RBV | regional blood volume |
| TTP | time to peak |
| RBF | regional blood flow |
| MTT | mean transit time |
| ROC | receiver operating characteristic curve |
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