Figure 6.

Analysis of 3D volumetric microstructure and porosity of different 3D-printed hydrogel-based grafts by micro-CT analysis. Panels (a, b) represent the 3D volumetric microstructure of pre-cross-linked hydrogel ink and cross-linked 3D-printed disc-shaped scaffolds, with 50 layers having a linear infill density at 0 and 90°. The volumetric porosity analysis was carried out by performing the computational analysis of the micro-CT data through Amira Avizo software to evaluate several parameters such as pore volume fraction, pore tortuosity, and pore interconnectivity.