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Abstract #2873

In Situ Quantification of the Longitudinal Relaxation Time of Phophatidylcholine in Human Bile at 7T

Lorenz Pfleger1,2, Albrecht Ingo Schmid2,3, Stefan Wampl2,3, Martin Gajdošík1,2,4, Siegfried Trattnig2,5, Michael Krebs1, and Martin Krššák1,2,5
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, 4Department of Biomedical Engineering, Columbia University, New York, NY, United States, 5Christian Doppler Laboratory for Clinical Molecular MR Imaging, Vienna, Austria

This study focuses on the in vivo determination of the longitudinal relaxation time (T1) of phosphatidylcholine (PtdC) in the gallbladder at 7T and its challenges. In most cases, it was possible to assess T1 with a 1D-ISIS sequence. In cases where the gallbladder is further away from the coil a STEAM sequence, which does not depend on 180° RF pulses, can be used. The T1 values of PtdC ranged between 290 and 480ms.

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