Table 4. Comparison of immunohistochemical biomarker expression and Emax in breast cancer.
| Biomarker | SWE-Emax | P value |
|---|---|---|
| HER-2 | 0.02 | |
| Negative (n=31) | 142.86±78.38 | |
| Positive (n=39) | 100.34±62.67 | |
| ER | 0.57 | |
| Negative (n=14) | 113.8±60.85 | |
| Positive (n=56) | 126.59±77.76 | |
| PR | 0.66 | |
| <15% (n=22) | 129.96±73.88 | |
| ≥15% (n=48) | 121.31±75.34 | |
| Ki-67 | 0.09 | |
| <15% (n=22) | 101.84±67.58 | |
| ≥15% (n=48) | 134.2±75.91 |
Data are expressed as mean ± standard deviation. Emax, maximum elastic modulus; ER, estrogen receptor; HER-2, human epidermal growth factor receptor-2; PR, progesterone receptor; SWE, shear wave elastography.