Abstract #1486

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

Stefan HG Rietsch^1,2, Stephan Orzada¹, Sascha Brunheim^1,2, Andreas K Bitz^3,4, Maximilian N Voelker^1,2, Viktor Pfaffenrot^1,2, Marcel Gratz^1,2, Daniel Leinweber¹, Jonathan Weine¹, Sarah Handtke¹, Oliver Kraff¹, Mark E Ladd^1,3,5, Peter Koopmans^1,2, and Harald H Quick^1,2

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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