FIG. 5.

Attenuation values of a bone cube sample in all scanning angles on frontal plane (a) before and (b) after normalization of the sample thickness in each scanning angle. Before normalization, medial-lateral orientation (0°) has the lowest attenuation value (12.79 dB), whereas measurements in +30° and −30° orientations have relatively higher values (15.42 dB and 15.61 dB). After normalization, QUS measurement in +30° has the highest normalized attenuation value (0.86 dB/mm) and is chosen to represent this sample in the correlation analysis with structural and mechanical properties.