DIFFUSION IMAGING

Diffusion MRI has established itself as an invaluable tool for the non-invasive probing of tissue microstructure and dynamics. As such, it has given rise to unique opportunities in brain diagnostics such as stroke and has demonstrated a remarkable success in assessing white matter fibre orientations. Conventional methods, however, suffer from intrinsic limitations based on a simplified assumption of Gaussian diffusion. Serious limitations are also related to the low angular resolution of the standard fibre tracking methods.

DIFFUSION IMAGING

To address these limitations, we design advanced methods which allow us to essentially increase both the angular resolution (HARDI) and the range of the diffusion-encoding gradient strengths (non-Gaussian diffusion). In turn, this provides us with enhanced information about diffusion mechanisms, the underlying microstructure and brain function. In cooperation with internal and external partners, we examine the potential applications of the new tools with respect to brain monitoring and diagnostics.

Projects

Non-Gaussian diffusion MRI

White matter plays a vital role in information transfer between various grey matter regions.

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Artificial Phantoms for Studies of Anisotropic Diffusion in the Brain

Diffusion Weighted Magnetic Resonance Imaging (DW-MRI) provides access to fibre pathways and structural integrity in fibrous tissues such as white matter in the brain.

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White matter plays a vital role in information transfer between various grey matter regions.

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Diffusion gradient calibration method

Precisely defined external magnetic field gradients are the basis for quantifying molecular motion and calculating the apparent diffusion coefficient (ADC) along different diffusion encoding directions.

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Precisely defined external magnetic field gradients are the basis for quantifying molecular motion and calculating the apparent diffusion coefficient (ADC) along different diffusion encoding directions.

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Staff

Dr Chang-Hoon ChoiBuilding 15.14 / Room 115+49 2461/61-1921
Dr. Ezequiel FarrherBuilding 15.14 / Room 210+49 2461/61-1910
Dr. Dr. Jörg MaulerBuilding 15.14 / Room R 101+49 2461/61-2984

Last Modified: 06.03.2023