Abstract #2475

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

Lorenz Pfleger^1,2, Lukas Hingerl², Albrecht Ingo Schmid^2,3, Philipp Moser², Wolfgang Bogner^2,4, Yvonne Winhofer¹, Siegfried Trattnig^2,4, and Martin Krššák^1,2,4

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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