TV-based Deep 3D Self Super-Resolution for fMRI
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866910841812549632 |
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| author | Pérez-Bueno, Fernando Li, Hongwei Bran Rosen, Matthew S. Nasr, Shahin Caballero-Gaudes, Cesar Iglesias, Juan Eugenio |
| author_facet | Pérez-Bueno, Fernando Li, Hongwei Bran Rosen, Matthew S. Nasr, Shahin Caballero-Gaudes, Cesar Iglesias, Juan Eugenio |
| contents | While functional Magnetic Resonance Imaging (fMRI) offers valuable insights into cognitive processes, its inherent spatial limitations pose challenges for detailed analysis of the fine-grained functional architecture of the brain. More specifically, MRI scanner and sequence specifications impose a trade-off between temporal resolution, spatial resolution, signal-to-noise ratio, and scan time. Deep Learning (DL) Super-Resolution (SR) methods have emerged as a promising solution to enhance fMRI resolution, generating high-resolution (HR) images from low-resolution (LR) images typically acquired with lower scanning times. However, most existing SR approaches depend on supervised DL techniques, which require training ground truth (GT) HR data, which is often difficult to acquire and simultaneously sets a bound for how far SR can go. In this paper, we introduce a novel self-supervised DL SR model that combines a DL network with an analytical approach and Total Variation (TV) regularization. Our method eliminates the need for external GT images, achieving competitive performance compared to supervised DL techniques and preserving the functional maps. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_04097 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | TV-based Deep 3D Self Super-Resolution for fMRI Pérez-Bueno, Fernando Li, Hongwei Bran Rosen, Matthew S. Nasr, Shahin Caballero-Gaudes, Cesar Iglesias, Juan Eugenio Image and Video Processing Computer Vision and Pattern Recognition While functional Magnetic Resonance Imaging (fMRI) offers valuable insights into cognitive processes, its inherent spatial limitations pose challenges for detailed analysis of the fine-grained functional architecture of the brain. More specifically, MRI scanner and sequence specifications impose a trade-off between temporal resolution, spatial resolution, signal-to-noise ratio, and scan time. Deep Learning (DL) Super-Resolution (SR) methods have emerged as a promising solution to enhance fMRI resolution, generating high-resolution (HR) images from low-resolution (LR) images typically acquired with lower scanning times. However, most existing SR approaches depend on supervised DL techniques, which require training ground truth (GT) HR data, which is often difficult to acquire and simultaneously sets a bound for how far SR can go. In this paper, we introduce a novel self-supervised DL SR model that combines a DL network with an analytical approach and Total Variation (TV) regularization. Our method eliminates the need for external GT images, achieving competitive performance compared to supervised DL techniques and preserving the functional maps. |
| title | TV-based Deep 3D Self Super-Resolution for fMRI |
| topic | Image and Video Processing Computer Vision and Pattern Recognition |
| url | https://arxiv.org/abs/2410.04097 |