MSCMH-Net: A multi-scale channel-mixing hybrid network for whole-brain segmentation

Clinical Snapshot

Key Findings

• P Value: Not reported

• Effect Size: Not specified in abstract

• Primary Outcome: Whole-brain segmentation accuracy using MSCMH-Net

• Nnt Or Sensitivity: Segmentation performance metrics not detailed

• Confidence Interval: Not reported

Clinical Application

Requires significant computational resources and technical expertise for implementation Relevant to Australian neuroimaging centres and research institutions, but implementation would require validation on local populations and integration with existing PACS systems Patients requiring brain MR analysis for neurological conditions, research participants in neuroimaging studies

Abstract

Whole-brain segmentation constitutes a fundamental task in medical image analysis, providing quantitative assessment of fine-grained brain regions and serving as a cornerstone for both clinical practice and neuroscience research. Despite its importance, the task is inherently challenging given the numerous brain regions, pronounced inter-class heterogeneity, and sophisticated inter-class spatial dependencies. Accurate whole-brain segmentation requires not only precise delineation of local features but also comprehensive modeling of long-range dependencies and global contextual information. To tackle these challenges, we propose the Multi-Scale Channel-Mixing Hybrid Network (MSCMH-Net), a CNN-MLP hybrid framework integrating convolutional and MLP modules at multiple hierarchical levels. The framework leverages the strengths of CNNs to capture local features and spatial structures, while employing MLPs to model long-range dependencies and global contextual information. For integrating global and local information, a channel-mixing module incorporating an exponential moving average (EMA) fusion strategy is employed. A composite dataset of 106 brain MR scans was used, including 36 from MICCAI-2012, 30 from ADNI and 40 from OASIS. Ground truth labels were annotated and double-checked by experts. Comprehensive experiments conducted on the composite dataset validate that MSCMH-Net achieves competitive results relative to existing approaches.

References

1. 1.Zhang, W., Yue, J., Liu, B., & Zhou, F. (2026). MSCMH-Net: A multi-scale channel-mixing hybrid network for whole-brain segmentation. Neuroscience. https://doi.org/10.1016/j.neuroscience.2026.03.022