Abstract #3581

Learned Off-Resonance Correction for Simultaneous Radial 23Na and 1H Acquisitions at 7T

Kirsten Koolstra¹, Olga Dergachyova², Zidan Yu^2,3, Andrew Webb¹, and Martijn Cloos^2,3

¹C.J. Gorter Center for High Field MRI, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands, ²Center for Advanced Imaging Innovation and Research, Department of Radiology, New York University School of Medicine, New York, NY, United States, ³Sackler Institute of Graduate Biomedical Sciences, NYU Langone Health, New York, NY, United States

Simultaneous proton (¹H) and sodium (²³Na) acquisition can provide important metabolic information. However, proton data may suffer from off-resonance artifacts due to the long dwell time required to obtain sufficient SNR for ²³Na. In this work we use center outward and center inward image pairs to train a convolutional neural network that performs an off-resonance correction for the proton data without an additional measured field map.

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