Dr. Xiaokun Liang Profile

Dr. Xiaokun Liang

at SIAT CAS

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Proceedings Article | 2 April 2024 Poster + Paper

Unsupervised learning with alternating matching features for 3D image registration

Lin Liu, Xinxin Fan, Xuan Liu, Wenfeng He, Xiaokun Liang

Proceedings Volume 12926, 129263C (2024) https://doi.org/10.1117/12.3006653

KEYWORDS: Image registration, Medical imaging, Transformers, Brain, 3D image processing

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Image registration serves as a central pre-processing step in medical image processing and plays a crucial role in various applications such as medical image analysis, diagnostics and surgical navigation. Existing deformable registration methods have mainly focused on the efficient extraction of features from two images, coupled with the automatic derivation of deformation fields. However, these methods tend to overlook the inherent low-level nature of deformable registration, which is considered unnecessary for feature extraction operations. Instead, deformable registration tasks should place more emphasis on detecting dissimilarities between the two images, thereby obtaining a more accurate deformation field. In this work, we present an unsupervised deformable image registration network called Cross-Matching-based Deformable Image Registration Network (CMBMorph). We introduce a cross-matching-based mechanism designed to facilitate the learning of feature disparities between the two images. By focusing attention on the non-aligned regions of the two images, our model achieves high-quality medical image registration results. We then evaluate our proposed method on publicly available datasets. Compared to baseline models and state-of-the-art techniques, our method achieves a Dice accuracy of 0.812, establishing a new state-of-the-art performance level.

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