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arXiv 2602.09686cs.CV

半监督肝脏分割与基于补丁的纤维化分期:基于注册的多参数MRI

Semi-supervised Liver Segmentation and Patch-based Fibrosis Staging with Registration-aided Multi-parametric MRI

1 Intelligent Modelling \& Analysis Group (IMA), 2 Lab for Uncertainty in Data;Decision Making (LUCID), \ of Computer Science, University of Nottingham, UK 3 Nottingham Biomedical Research Centre (BRC), \ of Medicine, University of Nottingham, UK;Intelligent Modelling \& Analysis Group (IMA), School of Computer Science, University of Nottingham, UK Lab for Uncertainty in Data;Decision Making (LUCID), School of Computer Science, University of Nottingham, UK Nottingham Biomedical Research Centre (BRC), School of Medicine, University of Nottingham, UK

Boya Wang, Ruizhe Li, Chao Chen, Xin Chen

AI总结:

本研究提出基于注册的多参数MRI的半监督肝脏分割与纤维化分期方法,通过多任务深度学习框架解决有限标注和多模态数据问题。

摘要:

肝纤维化在临床实践中是一个重大挑战,强调了精确肝脏分割和准确疾病分期的必要性。基于CARE Liver 2025 Track 4挑战,本研究介绍了一种多任务深度学习框架,用于使用多参数MRI进行肝脏分割(LiSeg)和肝脏纤维化分期(LiFS)。LiSeg阶段通过采用半监督学习模型整合图像分割和注册,解决标注图像有限和多参数MRI数据复杂性的问题。通过利用有标签和无标签数据,模型克服了领域偏移和模态差异带来的困难。在LiFS阶段,我们采用了基于补丁的方法,根据分类输出可视化肝脏纤维化阶段。我们的方法有效处理多模态成像数据、有限标签和领域偏移。所提出的方法已由挑战组织者在独立测试集上测试,该测试集包括分布内(ID)和分布外(OOD)案例,使用三通道MRI(T1、T2、DWI)和七通道MRI(T1、T2、DWI、GED1-GED4)。代码免费提供。GitHub链接:https://github.com/mileywang3061/Care-Liver

英文摘要:

Liver fibrosis poses a substantial challenge in clinical practice, emphasizing the necessity for precise liver segmentation and accurate disease staging. Based on the CARE Liver 2025 Track 4 Challenge, this study introduces a multi-task deep learning framework developed for liver segmentation (LiSeg) and liver fibrosis staging (LiFS) using multiparametric MRI. The LiSeg phase addresses the challenge of limited annotated images and the complexities of multi-parametric MRI data by employing a semi-supervised learning model that integrates image segmentation and registration. By leveraging both labeled and unlabeled data, the model overcomes the difficulties introduced by domain shifts and variations across modalities. In the LiFS phase, we employed a patchbased method which allows the visualization of liver fibrosis stages based on the classification outputs. Our approach effectively handles multimodality imaging data, limited labels, and domain shifts. The proposed method has been tested by the challenge organizer on an independent test set that includes in-distribution (ID) and out-of-distribution (OOD) cases using three-channel MRIs (T1, T2, DWI) and seven-channel MRIs (T1, T2, DWI, GED1-GED4). The code is freely available. Github link: https://github.com/mileywang3061/Care-Liver

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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