Enhancing the automatic segmentation and analysis of 3D liver vasculature models

• URL: http://arxiv.org/abs/2411.15778v1
• Date: Sun, 24 Nov 2024 10:58:48 GMT
• Title: Enhancing the automatic segmentation and analysis of 3D liver vasculature models
• Authors: Yassine Machta, Omar Ali, Kevin Hakkakian, Ana Vlascenau, Amaury Facque, Nicolas Golse, Irene Vignon-Clementel,
• Abstract summary: Venous trees - the portal (perfusing) and the hepatic (draining) trees are important for understanding the liver anatomy and disease state. This research aims to improve the 3D segmentation, skeletonization, and subsequent analysis of vessel trees.
• Score: 0.3957768262206625
• License:
• Abstract: Surgical assessment of liver cancer patients requires identification of the vessel trees from medical images. Specifically, the venous trees - the portal (perfusing) and the hepatic (draining) trees are important for understanding the liver anatomy and disease state, and perform surgery planning. This research aims to improve the 3D segmentation, skeletonization, and subsequent analysis of vessel trees, by creating an automatic pipeline based on deep learning and image processing techniques. The first part of this work explores the impact of differentiable skeletonization methods such as ClDice and morphological skeletonization loss, on the overall liver vessel segmentation performance. To this aim, it studies how to improve vessel tree connectivity. The second part of this study converts a single class vessel segmentation into multi-class ones, separating the two venous trees. It builds on the previous two-class vessel segmentation model, which vessel tree outputs might be entangled, and on connected components and skeleton analyses of the trees. After providing sub-labeling of the specific anatomical branches of each venous tree, these algorithms also enable a morphometric analysis of the vessel trees by extracting various geometrical markers. In conclusion, we propose a method that successfully improves current skeletonization methods, for extensive vascular trees that contain vessels of different calibers. The separation algorithm creates a clean multi-class segmentation of the vessels, validated by surgeons to provide low error. A new, publicly shared high-quality liver vessel dataset of 77 cases is thus created. Finally a method to annotate vessel trees according to anatomy is provided, enabling a unique liver vessel morphometry analysis.

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