7 T 1 Article 1 Brain 1 Diagnosis 1 Diffusion Tensor Imaging 1 Fixatives 1 Formaldehyde 1 Humans 1 Models, Theoretical 1 T2 mapping 1 T2 weighted imaging 1 Tissue Preservation 1 amyotrophic lateral sclerosis 1 anisotropy 1 autopsy 1 brain 1 brain tissue 1 concentration (parameter) 1 diagnosis 1 diagnostic imaging 1 diffusion MRI 1 diffusion coefficient 1 diffusion tensor imaging 1 diffusion weighted imaging 1 electron spin resonance 1 ferritin 1 fixative 1 fixative modelling formaldehyde 1 formalin 1