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Abstract #0641

MR System Stability and Quality Control using Gradient Impulse Response Functions (GIRF)

Zhe Wu1, Alexander Jaffray2, Johanna Vannesjo3, Kamil Uludag4,5, and Lars Kasper1
1Techna Institute, University Health Network, Toronto, ON, Canada, 2UBC MRI Research Center, University of British Columbia, Vancouver, BC, Canada, 3Department of Physics, Norwegian University of Science and Technology, Trondheim, Norway, 4Techna Institute & Koerner Scientist in MR Imaging, University Health Network, Toronto, ON, Canada, 5Biomedical Engineering, Center for Neuroscience Imaging Research, Institute for Basic Science, Sungkyunkwan University, Suwon, Korea, Republic of


This study investigated the long-term stability of GIRF within an eight-month period, together with the benefits of an optimized GIRF acquisition protocol. These studies provide insight into mechanisms of image quality degrading and potentially lead to improved image quality control, generalizable to arbitrary imaging sequences.

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