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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: J Bone Miner Res. 2012 Apr;27(4):848–857. doi: 10.1002/jbmr.1535

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