Fig. 1. Schematic of SS-OCT system

Fig. 2. OCT structural imaging results of bioprosthetic valves-tricuspid valve (scale bar: 2 mm). (a) Schematic diagram of tricuspid valve stent; (b) three-dimensional OCT structure (Z-X-Y); (c) en-face (X-Y) image of three-dimensional OCT structure; (d) OCT structural cross-section, corresponding to the position of the dashed line in figure (c)

Fig. 3. OCT structural imaging results of fiber surface of valve leaflets made of swine heart pericardium (scale bar: 2 mm). (a)(c) OCT en-face images of fiber surface in normal valve leaflets; (b)(d) two-dimensional OCT structural cross-sections, corresponding to the positions of the dashed line in figures (a) and (c); (e)(g) OCT en-face images of fiber surface in abnormal valve leaflets; (f)(h) two-dimensional OCT structural cross-sections, corresponding to the positions of the dashed line in figures (e) and (g), where the arrows point the obvious abnormal regions

Fig. 4. OCT structural imaging results of smooth layer and interlayer defects and cutting defects of valve leaflets made of swine heart pericardium (scale bar: 2 mm). (a)(c) OCT en-face images of damaged smooth layer and wrinkled smooth layer in abnormal valve leaflets; (b)(d) two-dimensional OCT structural cross-sections, corresponding to the positions of the dashed line in figures (a) and (c); (e)(g) OCT en-face images of abnormal valve leaflets with interlayer defects and cutting defects; (f)(h) two-dimensional OCT structural cross-sections, corresponding to the positions of the dashed line in figures (e) and (g), the arrows point the obvious abnormal regions