Keywords: CEST / APT / NOE, CEST & MT, fluid suppression
Motivation: The fluid compartment may show as hyperintense or hypointense artifacts on post-processed CEST images.
Goal(s): To propose a method identifying the fluid compartment on CEST images for improved image reading and quantitative analysis.
Approach: The z-spectrum between -1 and 1 ppm is fitted to a steady-state signal model. The B1, fitted parameters, and fitting residue are used as features to differentiate fluid and tissue compartments.
Results: The proposed method shows excellent performance for identifying fluid, with an AUC of 1. The post-processed CEST image masked by the fluid mask has improved readability.
Impact: The proposed method shows the ability to identify the fluid compartments on CEST images,which can help mitigate fluid artifacts in quantitative analysis and improve image reading.
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