GAMBAS: Generalised-Hilbert Mamba for Super-resolution of Paediatric Ultra-Low-Field MRI
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908436028981248 |
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| author | Baljer, Levente Briski, Ula Leech, Robert Bourke, Niall J. Donald, Kirsten A. Bradford, Layla E. Williams, Simone R. Parkar, Sadia Kaleem, Sidra Osmani, Salman Deoni, Sean C. L. Williams, Steven C. R. Moran, Rosalyn J. Robinson, Emma C. Vasa, Frantisek |
| author_facet | Baljer, Levente Briski, Ula Leech, Robert Bourke, Niall J. Donald, Kirsten A. Bradford, Layla E. Williams, Simone R. Parkar, Sadia Kaleem, Sidra Osmani, Salman Deoni, Sean C. L. Williams, Steven C. R. Moran, Rosalyn J. Robinson, Emma C. Vasa, Frantisek |
| contents | Magnetic resonance imaging (MRI) is critical for neurodevelopmental research, however access to high-field (HF) systems in low- and middle-income countries is severely hindered by their cost. Ultra-low-field (ULF) systems mitigate such issues of access inequality, however their diminished signal-to-noise ratio limits their applicability for research and clinical use. Deep-learning approaches can enhance the quality of scans acquired at lower field strengths at no additional cost. For example, Convolutional neural networks (CNNs) fused with transformer modules have demonstrated a remarkable ability to capture both local information and long-range context. Unfortunately, the quadratic complexity of transformers leads to an undesirable trade-off between long-range sensitivity and local precision. We propose a hybrid CNN and state-space model (SSM) architecture featuring a novel 3D to 1D serialisation (GAMBAS), which learns long-range context without sacrificing spatial precision. We exhibit improved performance compared to other state-of-the-art medical image-to-image translation models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_04523 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | GAMBAS: Generalised-Hilbert Mamba for Super-resolution of Paediatric Ultra-Low-Field MRI Baljer, Levente Briski, Ula Leech, Robert Bourke, Niall J. Donald, Kirsten A. Bradford, Layla E. Williams, Simone R. Parkar, Sadia Kaleem, Sidra Osmani, Salman Deoni, Sean C. L. Williams, Steven C. R. Moran, Rosalyn J. Robinson, Emma C. Vasa, Frantisek Image and Video Processing Magnetic resonance imaging (MRI) is critical for neurodevelopmental research, however access to high-field (HF) systems in low- and middle-income countries is severely hindered by their cost. Ultra-low-field (ULF) systems mitigate such issues of access inequality, however their diminished signal-to-noise ratio limits their applicability for research and clinical use. Deep-learning approaches can enhance the quality of scans acquired at lower field strengths at no additional cost. For example, Convolutional neural networks (CNNs) fused with transformer modules have demonstrated a remarkable ability to capture both local information and long-range context. Unfortunately, the quadratic complexity of transformers leads to an undesirable trade-off between long-range sensitivity and local precision. We propose a hybrid CNN and state-space model (SSM) architecture featuring a novel 3D to 1D serialisation (GAMBAS), which learns long-range context without sacrificing spatial precision. We exhibit improved performance compared to other state-of-the-art medical image-to-image translation models. |
| title | GAMBAS: Generalised-Hilbert Mamba for Super-resolution of Paediatric Ultra-Low-Field MRI |
| topic | Image and Video Processing |
| url | https://arxiv.org/abs/2504.04523 |