In this work, a PAM and OCT combined dual-modality imaging system was applied for non-invasive in vivo imaging of angiogenesis. Two groups of fibrin scaffolds, with and without basic fibroblast growth factor (bFGF), were implanted and covered by transparent imaging window for longitudinal observation. Imaging experiments were conducted on days 3, 5, 7, and 9 to monitor vascularization. Several vasculature related parameters were statistically compared and significant differences were discovered, indicating the effect of bFGF in promoting angiogenesis. By counting the vessel density in histological sections, similar statistical results consistent with the imaging was acquired, further validating the imaging accuracy.
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