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MTCNet: Motion and Topology Consistency Guided Learning for Mitral Valve Segmentation in 4D Ultrasound

Created by
  • Haebom

Author

Rusi Chen, Yuanting Yang, Jiezhi Yao, Hongning Song, Ji Zhang, Yongsong Zhou, Yuhao Huang, Ronghao Yang, Dan Jia, Yuhan Zhang, Xing Tao, Haoran Dou, Qing Zhou, Xin Yang, Dong Ni

Outline

In this paper, we propose MTCNet, a novel method for 4D ultrasound image analysis of mitral valve regurgitation, one of the most common heart diseases. To solve the lack of interphase dependency, which is a shortcoming of existing methods, MTCNet designs a mutual phase motion-induced consistency learning strategy using opposite-direction attention memory banks and a phase-induced correlation regularization to maintain anatomical validity. With a semi-supervised learning method using only limited end-diastolic and end-systolic annotations, it shows excellent interphase consistency (Dice: 87.30%, HD: 1.75mm) on a large-scale 4D mitral valve dataset containing 1408 phases of 160 patients. The source code and dataset are publicly available.

Takeaways, Limitations

Takeaways:
Improved accuracy of 4D mitral valve ultrasound image analysis: Provides more accurate 4D mitral valve segmentation results with better interphase consistency than existing methods.
Adopting a semi-supervised learning approach: Effective learning is possible with limited annotations, reducing the cost of data collection and annotation.
Maintain Anatomical Validity: Generate anatomically valid results through phase-induced correlation regularization.
Open access to large datasets and source code: Increases reproducibility of research and provides a foundation for follow-up research.
Limitations:
Although we use limited annotations, some level of annotation work is still required.
Further studies may be needed to investigate the impact of image quality degradation and motion artifacts on 4D ultrasound imaging.
Further studies may be needed to determine generalizability to other types of heart disease or other imaging modalities.
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