VecHeart: Holistic Four-Chamber Cardiac Anatomy Modeling via Hybrid VecSets

• URL: http://arxiv.org/abs/2604.19403v1
• Date: Tue, 21 Apr 2026 12:27:38 GMT
• Title: VecHeart: Holistic Four-Chamber Cardiac Anatomy Modeling via Hybrid VecSets
• Abstract summary: VecHeart is a unified framework for holistic reconstruction and generation of four-chamber cardiac structures.<n>VecHeart seamlessly extends to 3D+t dynamic mesh sequence generation, demonstrating exceptional versatility.
• Score: 41.275254607029595
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Accurate cardiac anatomy modeling requires the model to be able to handle intricate interrelations among structures. In this paper, we propose VecHeart, a unified framework for holistic reconstruction and generation of four-chamber cardiac structures. To overcome the limitations of current feed-forward implicit methods, specifically their restriction to single-object modeling and their neglect of inter-part correlations, we introduce Hybrid Part Transformer, which leverages part-specific learnable queries and interleaved attention to capture complex inter-chamber dependencies. Furthermore, we propose Anatomical Completion Masking and Modality Alignment strategies, enabling the model to infer complete four-chamber structures from partial, sparse, or noisy observations, even when certain anatomical parts are entirely missing. VecHeart also seamlessly extends to 3D+t dynamic mesh sequence generation, demonstrating exceptional versatility. Experiments show that our method achieves state-of-the-art performance, maintaining high-fidelity reconstruction across diverse challenging scenarios. Code will be released.

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