Phase-locked CEST: Introducing dynamic B0-correction to gagCEST

Windschuh, J; Zaiss, M; Lee, J-S; Jerschow, A; Regatte, R

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Phase-locked CEST: Introducing dynamic B0-correction to gagCEST

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

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Citation

Windschuh, J., Zaiss, M., Lee, J.-S., Jerschow, A., & Regatte, R. (2018). Phase-locked CEST: Introducing dynamic B0-correction to gagCEST. Poster presented at Joint Annual Meeting ISMRM-ESMRMB 2018, Paris, France.

Cite as: https://hdl.handle.net/21.11116/0000-0001-7D88-A

Abstract

Even a small frequency drift of less than 1Hz/min of the MRI scanner can have a strong impact on gagCEST measurements. We propose a dynamic B0-correction that tracks the frequency shift using the phase images provided by the GRE readout. We show that this correction eliminates the influence of the frequency drift on gagCEST without the need of additional measurement time allowing higher accuracy, reproducibility, and comparability of gagCEST studies.