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Abstract #3914

Characterization of a matrix gradient system using a magnetic field probe

Ying-Hua Chu1,2, Sebastian Littin2, Yi-Cheng Hsu1,2, and Maxim Zaitsev2

1Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan, 2Medical Physics, Department of Radiology, University Medical Center Freiburg, Freiburg, Germany

Measuring GIRF using field probe and chirp gradient waveform is an efficient method to characterize the gradient behavior. We demonstrate that by measuring GIRF for each channel we are able to predict the response of simultaneously driven 12-channel gradient operation. Full characterization of the gradient system can be used to detect suboptimal matching of the amplifier and can be used to achieve desired performance also in such complex systems as matrix gradient coils.

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