3D High-Frequency Ultrasound Imaging of Cartilage-Bone Interface Compared with Micro-CT

Table 1

Measured waviness/roughness index and correlation analysis from US and micro-CT imaging.

	Waviness (μm)		Roughness (μm)		()
Modalities
US
					0.07 (0.80)
					0.13 (0.64)
Micro-CT
					-0.46 (0.09)
					-0.22 (0.42)
()	(<0.001)	(<0.001)	(<0.001)	(<0.001)

: absolute mean index;: root mean square (RMS) index (refer to the text for definitions); : waviness; : roughness; : Pearson correlation, : significance level of Pearson correlation analysis. : significant correlation ().