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Abstract #3829

Improved B1+ Field using a 16-Channel Transmit Head Array & an 8-Channel PTx System at 7T

Kyoung Nam Kim1, Niravkumar Darji2, Tim Herrmann1, Johannes Mallow1, Zang-He Cho3, Oliver Speck2, Johannes Bernarding1

1Department of Biometry & Medical Informatics, OvG University Magdeburg, Magdeburg, Saxony-Anhalt, Germany; 2Chair of Biomedical Magnetic Resonance, OvG University Magdeburg, Magdeburg, Saxony-Anhalt, Germany; 3Neuroscience Research Institute, Gachon University of Medicine & Science, Incheon, Korea, Republic of

At 7T, parallel transmission (pTx) systems provide still significant challenges for the design and implementation of RF-coils for dedicated transmit channels and their integration into existing pTx systems. This work was focused on the construction of a 16-channel head-array for available combined 8-channel and individual 16-channel transmission systems, resulting in a RF-coil with a total of 8-channel pTx system. Flip angle (FA) maps of an oil and water phantom were acquired using this prototype. For 16 individual FA maps for odd-even channels and 8 combined FA maps of 16-channel head-array were compared with RAPID Biomedical 8-ch. Tx/Rx head-array at 7T.