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

Figure 6

Comparison of typical cross-sectional images in the ultrasound imaging and histology (Safranin O staining) for two specific samples with a small and large roughness index as shown in Figure 5(b). (a, c) Represent a typical US and histology image for the sample with a roughness index of μm; (b, d) represent a typical US and histology image for the sample with a roughness index of μm. The results consistently show a smoother surface in (a) and (c) compared to those of (b) and (d) in terms of US imaging and histology. Duplicated tidemark obviously seen in histology (c) is also implicitly observed as a second bright reflection surface in US imaging (a). The scale bar is 1 mm in length.

(a)

(b)

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