Bayesian Maximal Paths for Coronary Artery Segmentation from 3D CT Angiograms

We propose a recursive Bayesian model for the delineation of coronary arteries from 3D CT angiograms (cardiac CTA) and discuss the use of discrete minimal path techniques as an efficient optimization scheme for the propagation of model realizations on a discrete graph. Design issues such as the definition of a suitable accumulative metric are analyzed in the context of our probabilistic formulation. Our approach jointly optimizes the vascular centerline and associated radius on a 4D space+scale graph. It employs a simple heuristic scheme to dynamically limit scale-space exploration for increased computational performance. It incorporates prior knowledge on radius variations and derives the local data likelihood from a multiscale, oriented gradient flux-based feature. From minimal cost path techniques, it inherits practical properties such as computational efficiency and workflow versatility. We quantitatively evaluated a two-point interactive implementation on a large and varied car...

• Type: Conference
• Year: 2009
• Where: MICCAI
• Authors: David Lesage, Elsa D. Angelini, Isabelle Bloch, Gareth Funka-Lea
• Keywords: Cardiac Cta, Discrete Minimal Path, MICCAI 2009, Path Techniques