Table 1.
Summary of the relationship between shear wave elastography parameters and histologic parameters.
| SWE parameters |
Emean±SD (kPa) |
Emax±SD (kPa) |
Emin±SD (kPa) |
Esd±SD (kPa) |
fmass±SD (Hz) |
|---|---|---|---|---|---|
| Mass diameter | |||||
| P value | <0.001* | <0.001* | <0.001* | <0.001* | ND |
| ≤10 mm (84) | 55.2±34.4 | 107.8±65.7 | 22.6±17.4 | 1.7±1.3 | 329.7±138.4 |
| 10-20 mm (103) | 79.1±33.8 | 158.3±53.6 | 30.1±22.3 | 2.7±1.7 | 205.2±84.7 |
| >20 mm (77) | 95.0±34.5 | 184.7±53.8 | 40.3±26.0 | 2.8±1.7 | 122.4±50.0 |
| Calcifications | |||||
| P value | 0.96 | 0.64 | 0.45 | 0.40 | 0.001* |
| None (167) | 76.9±38.0 | 149.0±63.8 | 31.2±22.6 | 2.3±1.5 | 235.3±123.0 |
| Present (97) | 74.8±36.8 | 151.7±67.5 | 29.8±24.0 | 2.6±2.0 | 195.5±131.9 |
| Lymph node | |||||
| P value | <0.001* | <0.001* | 0.01* | <0.001* | 0.01* |
| Negative (186) | 68.4±36.4 | 134.6±62.8 | 28.2±21.8 | 2.1±1.6 | 231.6±127.7 |
| Positive (78) | 94.6±33.7 | 186.6±55.1 | 36.6±25.1 | 3.1±1.8 | 194.5±124.0 |
| Subtype | |||||
| P value | <0.001* | <0.001* | 0.001* | 0.03* | 0.44 |
| IDC (170) | 76.2±37.1 | 151.7±64.9 | 30.3±23.3 | 2.5±1.8 | 223.9±132.7 |
| IMC (45) | 82.5±36.0 | 161.7±55.6 | 33.8±23.0 | 2.4±1.4 | 225.2±115.9 |
| ILC (33) | 85.7±35.3 | 161.7±61.4 | 36.7±23.1 | 2.4±1.5 | 222.5±128.0 |
| DCIS (16) | 37.8±29.4 | 74.8±54.8 | 14.1±12.1 | 1.3±1.3 | 169.6±97.7 |
| Histological grade | |||||
| P value | 0.11 | 0.01* | 0.68 | 0.01* | <0.001* |
| I/II (182) | 75.6±35.8 | 147.4±62.5 | 31.5±22.3 | 2.3±1.6 | 243.7±132.8 |
| III (64) | 84.8±38.9 | 171.0±61.9 | 31.7±25.4 | 2.9±1.8 | 172.9±98.7 |
The numbers in parentheses are mass numbers.
Abbreviations: IDC=invasive ductal carcinoma; IMC=invasive mammary carcinoma with ductal and lobular features; ILC=invasive lobular carcinoma; DCIS=ductal carcinoma in situ; SD=standard deviation; ND=not done.
*
p<0.05, difference is statistically significant.