Ana-Maria
Oros-Peusquens1, Arlad Roebroeck2, Oleg Posnansky1,
N Jon Shah1,2
1Institute
of Neuroscience and Medicine 4, Medical Imaging Physics, Forschungszentrum
Juelich GmbH, Juelich, Germany; 2Faculty of Medicine, JARA, RWTH
Aachen University, Aachen, Germany
MRI
of fixed tissue can be performed with very high resolution since measurement
time is not a major constraint. Here, we use STEAM diffusion to overcome
EPI-related problems (poor resolution, distortions, signal drop out) at 9.4T.
We investigate fixed tissue samples from the occipital lobe (visual cortex)
and temporal lobe (auditory cortex) with a voxel size of 80nl (resolution of
0.3x0.3x0.8mm). Cortical layer structure is observed in the ADC and FA maps.
Fibre tracks from the stria of Gennari, from adjacent white matter and fibres
emerging from the grey matter joining the regular tracts of the white matter
are investigated.