Abstract #1785

Novel Half Fourier Reconstruction Recovering Signal Loss from Off-resonance

Seul Lee¹ and Gary Glover²

¹Department of Electrical Engineering, Stanford University, Stanford, CA, United States, ²Department of Radiology, Stanford University, Stanford, CA, United States

Since half k-space reconstruction reduces scan time while keeping spatial resolution, it can be used for T₂* weighted images such as functional MRI that requires fairly long TE. Functional MRI is sensitive to off-resonance because there exist large susceptibility variations in air-tissue interfaces such as sinuses. Existing half k-space reconstruction is vulnerable to off-resonance since it might lose most of the image energy when there is a large amount of phase shift. In this study, we suggest a new half k-space reconstruction method that is more robust to off-resonance compared to existing reconstruction method.

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