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• W3036184476 abstract "Abstract As plans develop for Mars missions, it is important to understand how long-duration spaceflight impacts brain health. Here we report how 12-month (n = 2 astronauts) versus 6-month (n = 10 astronauts) missions impact brain structure and fluid shifts. We collected MRI scans once before flight and four times after flight. Astronauts served as their own controls; we evaluated pre- to postflight changes and return toward preflight levels across the 4 postflight points. We also provide data to illustrate typical brain changes over 7 years in a reference dataset. Twelve months in space generally resulted in larger changes across multiple brain areas compared with 6-month missions and aging, particularly for fluid shifts. The majority of changes returned to preflight levels by 6 months after flight. Ventricular volume substantially increased for 1 of the 12-month astronauts (left: +25%, right: +23%) and the 6-month astronauts (left: 17 ± 12%, right: 24 ± 6%) and exhibited little recovery at 6 months. Several changes correlated with past flight experience; those with less time between subsequent missions had larger preflight ventricles and smaller ventricular volume increases with flight. This suggests that spaceflight-induced ventricular changes may endure for long periods after flight. These results provide insight into brain changes that occur with long-duration spaceflight and demonstrate the need for closer study of fluid shifts." @default.
• W3036184476 created "2020-06-25" @default.
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• W3036184476 date "2020-01-01" @default.
• W3036184476 modified "2023-10-17" @default.
• W3036184476 title "The Impact of 6 and 12 Months in Space on Human Brain Structure and Intracranial Fluid Shifts" @default.
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• W3036184476 doi "https://doi.org/10.1093/texcom/tgaa023" @default.
• W3036184476 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7446230" @default.
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• W3036184476 hasPublicationYear "2020" @default.
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