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Abstract #3948

Simulation of a shield effect on a J-pole antenna array for ultra-high field MR-PET

Chang-Hoon Choi1, Suk-Min Hong1, Jörg Felder1,2, Christoph Lerche1, and N. Jon Shah1,3,4,5
1Institute of Neuroscience and Medicine - 4, Forschungszentrum Juelich, Juelich, Germany, 2RWTH Aachen University, Aachen, Germany, 3Institute of Neuroscience and Medicine - 11, Forschungszentrum Juelich, Juelich, Germany, 4JARA - BRAIN - Translational Medicine, Aachen, Germany, 5Department of Neurology, RWTH Aachen University, Aachen, Germany


Interest in simultaneously operating MR-PET systems as a means of accessing multiple biological parameters with high spatial and temporal resolution is increasing. In a hybrid acquisition, the RF antenna is used inside the PET FOV generating potential photon loss and artefacts. A multi-channel J-pole antenna array, which does not include any high-density parts in the imaging FOV, has been recently introduced, and its outstanding performance has been demonstrated. To prevent interference between MR and PET, including an RF shield is necessary. Here, we conducted a simulation to compare the characteristics of the J-shape antenna array with and without the shield.

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