Approaching Artery Rigid Dynamics in IVUS
Por:
Hernandez-Sabate, A, Gil, D, Fernandez-Nofrerias, E, Radeva, P and Marti, E
Publicada:
1 nov 2009
Resumen:
Tissue biomechanical properties (like strain and stress) are playing an increasing role in diagnosis and long-term treatment of intravascular coronary diseases. Their assessment strongly relies on estimation of vessel wall deformation. Since intravascular ultrasound (IVUS) sequences allow visualizing vessel morphology and reflect its dynamics, this technique represents a useful tool for evaluation of tissue mechanical properties. Image misalignment introduced by vessel-catheter motion is a major artifact for a proper tracking of tissue deformation. In this work, we focus on compensating and assessing IVUS rigid in-plane motion due to heart beating. Motion parameters are computed by considering both the vessel geometry and its appearance in the image. Continuum mechanics laws serve to introduce a novel score measuring motion reduction in in vivo sequences. Synthetic experiments validate the proposed score as measure of motion parameters accuracy; whereas results in in vivo pullbacks show the reliability of the presented methodologies in clinical cases.
Filiaciones:
Hernandez-Sabate, A:
Univ Autonoma Barcelona, Dept Comp Sci, Bellaterra 08193, Spain
Comp Vis Ctr, Bellaterra 08193, Spain
Gil, D:
Univ Autonoma Barcelona, Dept Comp Sci, Bellaterra 08193, Spain
Comp Vis Ctr, Bellaterra 08193, Spain
:
Hosp Badalona Germans Trias & Pujol, Badalona 08916, Spain
Radeva, P:
Comp Vis Ctr, Bellaterra 08193, Spain
Univ Barcelona, Dept Appl Math, Barcelona, Spain
Marti, E:
Univ Autonoma Barcelona, Dept Comp Sci, Bellaterra 08193, Spain
Comp Vis Ctr, Bellaterra 08193, Spain
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