Keywords: Diffusion Reconstruction, Diffusion/other diffusion imaging techniques, Postmortem
Motivation: In diffusion MRI, large post-mortem samples reach steady-state temperature and diffusivity only after a very long scan time.
Goal(s): Our goal was to use data during steady-state temperature adaptation to model changing diffusivity and still obtain reliable tissue orientations.
Approach: We estimated the diffusivities at steady-state temperature with a subset of the data and computed the temperature correction coefficients from the difference between predicted and measured data.
Results: The corrected data has greatly increased test-retest agreement and angular accuracy of fiber orientation estimates.
Impact: Accelerate post-mortem diffusion MRI by replacing dummy scans with our new data-driven temperature modeling.
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