This study aims at demonstrating the feasibility of ex vivo MRI for structural imaging of brain. High spatial resolution in the range of 15-20 µm is obtained by an optimized FLASH sequence together with a cryogenically cooled RF coil. A 15µm-resolution was obtained for the brain, revealing cortical grey matter lamination, white matter and vascular architecture. As proof of concept, we showed in an Amyotrophic Lateral Sclerosis ( FUSΔNLS) mouse the pattern of atrophy as proxy of vulnerability using high degree of anatomical granularity. Overall, we demonstrate an ex-vivo MRI strategy with histology-grade resolution, comprehensive and non-destructive brain sampling.
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Abaei et al. (2024) studied this question.
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