Strain imaging and elasticity reconstruction of arteries based on intravascular ultrasound video images

Based on intravascular ultrasound (IVUS) video images, a novel motion estim ation method combining the genetic algorithm-based optical flow method and a step-by-step and sum strategy has been developed to estimate the displace ment and strain distributions on the scan cross sections of the arteries. A nd then, real elasticity distributions mere reconstructed under the conditi ons of small and large deformation. Experimental results of in vitro porcin e arteries demonstrated the feasibility of the method. This investigation m ay have potentials to provide new technological means for monitoring and ev aluating percutaneous transluminal coronary angioplasty procedure, especial ly, for the end users of IVUSpercimaging equipment.