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Resolution- and Stimulus-agnostic Super-Resolution of Ultra-High-Field Functional MRI: Application to Visual Studies
March 20, 2024, 4:46 a.m. | Hongwei Bran Li, Matthew S. Rosen, Shahin Nasr, Juan Eugenio Iglesias
cs.CV updates on arXiv.org arxiv.org
Abstract: High-resolution fMRI provides a window into the brain's mesoscale organization. Yet, higher spatial resolution increases scan times, to compensate for the low signal and contrast-to-noise ratio. This work introduces a deep learning-based 3D super-resolution (SR) method for fMRI. By incorporating a resolution-agnostic image augmentation framework, our method adapts to varying voxel sizes without retraining. We apply this innovative technique to localize fine-scale motion-selective sites in the early visual areas. Detection of these sites typically requires …
abstract application arxiv brain contrast cs.cv deep learning eess.iv fmri functional image low mri noise organization signal spatial stimulus studies type visual work
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