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Abstract #4622

Water removal in MR spectroscopic imaging with Casorati Singular Value Decomposition

Amirmohammad Shamaei1, Jana Starcukova1, Jedrek Burakiewicz 2, and Zenon Starcuk 1
1Institute of Scientific Instruments of the Czech Academy of Sciences Research institute in Brno, Brno, Czech Republic, 2Tesla Dynamic Coils, Zaltbommel, Netherlands

Synopsis

Keywords: Sparse & Low-Rank Models, Data Processing, Singular value decomposition, MR spectroscopic imaging, Water removalRemoving residual water from the MRSI datasets using the SVD-based algorithms is computationally demanding. We present a novel algorithm to reduce the computing time required for water removal in MRSI data. Our proposed method exploits low-rank structures that exist in MRSI data. It arranges the MRSI data in the Casorati matrix form, applies singular value decomposition, and removes residual water from the most prominent left-singular vectors. We compared our proposed method with the HLSVDPRO method, and we achieved 20x acceleration while improving effectiveness. Our proposed method is publicly available as a pip-installable Python tool.

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Keywords