A (k,t)-RAKI Method for Interpolating Sparse Data in Accelerated MRSI Acquisitions

Yunrui Zhang, Ruiyang Zhao, Zepeng Wang

International Society of Magnetic Resonance in Medicine (ISMRM) 2024 Power Pitch

In this work, we adapted and extended the self-supervised learning-based RAKI method by incorporating the FID dimension into a 3D, complex-valued convolutional network, for MRSI reconstruction. We improved the design by training a single network to handle multi-coil data simultaneously instead of the coil-by-coil interpolation in the original RAKI method. We demonstrate reduced aliasing by the proposed method and consequently improved spatiospectral processing results, using in vivo 1H-MRSI data.

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