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Poster

Impact of Gradient Nonlinearity on the Accuracy of NMR Field Camera Readouts

MPS-Authors
/persons/resource/persons192839

Chang,  P
Max Planck Institute for Biological Cybernetics, Max Planck Society;
Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society;

/persons/resource/persons133452

Eschelbach,  M
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

/persons/resource/persons84187

Scheffler,  K
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

/persons/resource/persons84402

Henning,  A
Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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http://www.ismrm.org/15/program_files/TueTP06.htm
(Publisher version)

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Citation

Chang, P., Eschelbach, M., Syha, R., Scheffler, K., & Henning, A. (2015). Impact of Gradient Nonlinearity on the Accuracy of NMR Field Camera Readouts. Poster presented at 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002A-4603-5
Abstract
Field monitoring using NMR field cameras typically use the gradients for calculating the positions of the field probes. However this is under the assumption that the gradients are linear which is certainly not the case. The effect of evaluated gradient imperfections on the estimation of the probes was investigated. Furthermore, the effect of the position error on monitoring higher order spherical harmonics was also investigated. A CT scan of the field camera setup was used to correct for errors in the calculations of the probe position.