Table 2.
Correlation between UTE MR measurements (total water concentration, short T2*, long T2*, short T2* fraction and long T2* fraction), μCT cortical porosity and biomechanical properties (Young’s Modulus, Failure Strain, Ultimate Stress, Yield Strain, Yield Stress and Failure Energy) of 32 human cortical bone samples. R-values (top) and P-values (bottom) are shown.
| R-value | Porosity | Modul. | Fail. Strain | Ult. Stress | Yield Strain | Yield Stress | Fail. Energy | Total WC | Short Fraction | Long Fraction | Short T2* |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Modulus | −0.07 | ||||||||||
| Fail. Strain | −0.13 | −0.27 | |||||||||
| Ult. Stress | −0.13 | 0.87 | 0.06 | ||||||||
| Yield Strain | −0.06 | −0.48 | 0.44 | −0.12 | |||||||
| Yield Stress | −0.12 | 0.85 | −0.03 | 0.98 | −0.07 | ||||||
| Fail. Energy | −0.15 | 0.18 | 0.76 | 0.48 | 0.25 | 0.43 | |||||
| Total WC | 0.46 | −0.30 | −0.19 | −0.53 | −0.18 | −0.51 | −0.33 | ||||
| Short Fraction | −0.50 | −0.22 | 0.38 | −0.10 | 0.20 | −0.17 | 0.25 | −0.34 | |||
| Long Fraction | 0.50 | 0.23 | −0.38 | 0.10 | −0.20 | 0.17 | −0.25 | 0.34 | −1.00 | ||
| Short T2* | −0.49 | −0.11 | 0.54 | 0.14 | 0.29 | 0.10 | 0.55 | −0.47 | 0.53 | −0.53 | |
| Long T2* | 0.12 | 0.22 | 0.19 | 0.38 | 0.04 | 0.33 | 0.41 | −0.32 | 0.23 | −0.23 | 0.30 |
| P-value | Porosity | Modulus | Fail. Strain | Ult. Stress | Yield Strain | Yield Stress | Fail. Energy | Total WC | Short Fractio | Long Fractio | Short T2* |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Modulus | 0.682 | ||||||||||
| Fail. Strain | 0.432 | 0.100 | |||||||||
| Ult. Stress | 0.420 | 0.000 | 0.731 | ||||||||
| Yield Strain | 0.701 | 0.002 | 0.005 | 0.468 | |||||||
| Yield Stress | 0.447 | 0.000 | 0.841 | 0.000 | 0.677 | ||||||
| Fail. Energy | 0.347 | 0.268 | 0.000 | 0.002 | 0.118 | 0.006 | |||||
| Total WC | 0.003 | 0.064 | 0.250 | 0.001 | 0.265 | 0.001 | 0.041 | ||||
| Short Fraction | 0.001 | 0.166 | 0.016 | 0.531 | 0.226 | 0.306 | 0.126 | 0.035 | |||
| Long Fraction | 0.001 | 0.161 | 0.016 | 0.531 | 0.215 | 0.305 | 0.129 | 0.036 | 0.000 | ||
| Short T2* | 0.002 | 0.510 | 0.000 | 0.387 | 0.071 | 0.556 | 0.000 | 0.002 | 0.001 | 0.001 | |
| Long T2* | 0.460 | 0.168 | 0.253 | 0.017 | 0.814 | 0.037 | 0.009 | 0.044 | 0.152 | 0.159 | 0.061 |