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Abstract #2475

Reducing Signal Spreading with Non-Cartesian Encoding Methods for abdominal 31P 3D-MRSI with Focus on the Gallbladder

Lorenz Pfleger1,2, Lukas Hingerl2, Albrecht Ingo Schmid2,3, Philipp Moser2, Wolfgang Bogner2,4, Yvonne Winhofer1, Siegfried Trattnig2,4, and Martin Krššák1,2,4

1Division of Endocrinology and Metabolism, Department of Medicine III, Medical University of Vienna, Vienna, Austria, 2High-field MR Centre, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria, 3Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria, 4Christian Doppler Laboratory for Clinical Molecular MR Imaging, Vienna, Austria

This study focuses on 31P 3D MR spectroscopic imaging (MRSI) of the gallbladder and the reduction of voxel bleeding by Non-Cartesian encoded data sampling. Our results demonstrate on a phantom that the contamination due to point-spread-function (PSF) can be decreased compared to conventional Cartesian phase encoding. Qualitative improvements were investigated by metabolic mapping of biliary phosphatidylcholine (PtdC) originating from the gallbladder.

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