心血管カテーテル血管造影における多クラス分割のための二部構成マルチラテラル分岐ネットワーク
Dual-Part Multi-Lateral Branched Network for Multi-Class Segmentation in Cardiovascular Catheterization Angiograms
カテーテル画像の多クラス分割を高速かつ高精度に行うため、エンコーダに横方向分岐、デコーダに複数ヘッドを持つ二部構成のMLBNetを提案し、ファントムや動物モデルのデータで有効性を検証した。
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著者: Olatunji Omisore, Ahmed Elazab, Ali Shahidinejad, Fariza Sabrina
分類: cs.CV, cs.AI, cs.RO
原文アブストラクト
Catheterisation image processing requires segmentation models that are fast, accurate and explainable. While most of the existing studies usually focus on binary segmentation, there is a recent demand for simultaneous segmentation of multiple structures found in catheterization scenes. In this study, a dual-part MLBNet architecture is designed with multi-lateral encoder blocks and multi-head decoder branches for class-aware segmentation in cardiovascular catheterization scenes. Lateral branches in the encoder enables repeated feature extraction to learn diverse shared representations, while multiple decoder heads are used to introduce class-skewed branches that specialize in different structural properties in catheterization scenes. To analyze the performances of the dual-part MLBNet architecture, several multi-class segmentation angiogram data obtained during cardiovascular catheterization in phantom models, synthetic human-simulated aorta, and animal model are used for model training and evaluation. Results obtained showed the dual-part models could effectively separate guidewire, catheter, vessels and background pixels to their classes of memberships with high probability. The results demonstrate that all models were able to distinguish the dominant background class from foreground structures with high overall accuracy.