For the presented polariscope, the weak influence of stress direction in magnitude measurements was confirmed. In vasculature phantoms, the three-dimensional visualization of stress eliminated birefringence visualization distortion and enabled more comprehensive comparison of stress produced by intravascular tools with stress produced by normal blood pressure.
Numerical criteria for evaluating stress on vasculature models have applications in evaluating medical tools and surgical skills enabling better endovascular surgery training and the development of better medical techniques and tools. We propose using the stress produced by blood pressure simulation in the vasculature model wall for this criterion and use photoelastic effect for measuring the principal stress magnitude component. We simulated human blood pressure with 5.6% average error and developed shielded urethane model of vasculature enabling water circulation and avoiding plastic deformation at pressures below 182 mmHg. We developed software to calculate model wall stress. We quantitatively compared in four ranges stress produced on the model wall by blood pressure simulation and a guide wire.
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