Visualization and analysis of mural thrombogenesis on collagen, polyurethane and nylon.

Visualization and analysis of mural thrombogenesis on collagen-coated glass, polyurethane and nylon was discussed. Epi-fluorescent video microscopy was used to visualize thrombotic events at a protein or polymer surface in contact with flowing whole blood. Digital image processing was used to analyse the real-time microscopic images obtained, resulting in measurements of morphological features and the number of platelets that compose each thrombus. The three-dimensional structures of the thrombi were also estimated. A photodiode was used to measure integrated end-point platelet accumulation at different axial positions along the surface. Additionally, the convection-diffusion equations were solved to estimate the concentrations of adenosine diphosphate, thromboxane A2, and thrombin generated by activated platelets at the blood-contacting surface.