Fig. 4.

Comparison of the square root of Young’s modulus as measured by uniaxial mechanical testing ($n=4$ samples for each concentration) to the DNF of the same homogeneous phantoms ($n=9$ OCE measurement positions for each concentration) and the corresponding heterogeneous phantom components ($n=24$ and 57 for 1% and 2% components, respectively). Error bars are the 95% confidence intervals of the means.