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Abstract #1486

A 32-channel transmit/receive radiofrequency head coil for 7T UHF MR

Stefan HG Rietsch1,2, Stephan Orzada1, Sascha Brunheim1,2, Andreas K Bitz3,4, Maximilian N Voelker1,2, Viktor Pfaffenrot1,2, Marcel Gratz1,2, Daniel Leinweber1, Jonathan Weine1, Sarah Handtke1, Oliver Kraff1, Mark E Ladd1,3,5, Peter Koopmans1,2, and Harald H Quick1,2

1Erwin L. Hahn Institute for MR Imaging, University of Duisburg-Essen, Essen, Germany, 2High-Field and Hybrid MR Imaging, University of Duisburg-Essen, Essen, Germany, 3Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany, 4Electromagnetic Theory and Applied Mathematics, Faculty of Electrical Engineering and Information Technology, University of Applied Sciences Aachen, Aachen, Germany, 5Faculty of Physics and Astronomy and Faculty of Medicine, University of Heidelberg, Heidelberg, Germany

In this work, a 32-channel transmit/receive (32Tx32Rx) head coil for 7T UHF MRI was developed and evaluated. The performance of this coil is compared to a commercially available 1Tx32Rx head coil regarding noise correlation, signal-to-noise ratio (SNR) and B1 homogeneity. The results indicate that high flexibility concerning RF shimming is provided by the 32Tx32Rx head coil that translates into a more homogeneous flip angle distribution compared to the 1Tx32Rx head coil. First 7T MR imaging results show the increased coverage of both the head and superior parts of the neck.

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