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Abstract #3542

Evaluation of potential improvements from high permittivity pads for imaging upper extremities at 7 Tesla

Oliver Kraff1, Andrea Lazik-Palm1,2, Wyger M Brink3, Andreas K Bitz4, Mark E Ladd4, and Harald H Quick1,5

1Erwin L. Hahn Institute for MRI, University Duisburg-Essen, Essen, Germany, 2Department of Diagnostic and Interventional Radiology and Neuroradiology, University Duisburg-Essen, University Hospital, Essen, Germany, 3Radiology, Leiden University Medical Center, Leiden, Netherlands, 4Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany, 5High Field and Hybrid MR Imaging, University Duisburg-Essen, University Hospital, Essen, Germany

Two sets of dielectric pads with high permittivity (CaTiO3: 110 and BaTiO3: 286) were evaluated for potential improvements in imaging the shoulder joint and upper arm in combination with an 8–channel transmit/receive shoulder coil at 7 Tesla. In vivo images with structural PD TSE and DREAM flip angle maps were obtained and compared to measurements without pads present. Both a fixed RF shim as well as individual RF shimming were applied. For the investigated configurations, no substantial improvements in imaging upper extremities at 7 Tesla were found when applying high permittivity dielectric pads.

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