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Human T2* and Phase Imaging at 9.4 T

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons83838

Budde,  J
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons84213

Shajan,  G
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons84092

Mühlbauer,  F
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons83973

Hoffmann,  J
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons84145

Pohmann,  R
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Budde, J., Shajan, G., Mühlbauer, F., Hoffmann, J., Ugurbil, K., & Pohmann, R. (2010). Human T2* and Phase Imaging at 9.4 T. Poster presented at ISMRM-ESMRMB Joint Annual Meeting 2010, Stockholm, Sweden.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-C07C-4
Abstract
Effects due to susceptibility differences of different tissue types scale with the static magnetic field B0. They cause local magnetic field variations ΔB0 which lead to shorter T2* values as well as larger variations of the image phase [1]. Both effects can be used to obtain a contrast in magnetic resonance images, which profits from a higher static magnetic field. This is especially useful since regular gradient echo (GRE) sequences yield a decreased grey matter - white matter contrast for ultra-high field strength. Therefore phase images [2] and T2* maps could supplement magnitude images for differentiating different tissue types in the brain. In this work, detailed T2* maps and phase images in the human brain were acquired at 9.4 T, which show excellent tissue contrast, and demonstrate internal structures in white and grey matter.