The local transceiver coil such as a birdcage coil has still been
equipped for local extremity or brain MRI in clinical study. By
accident, the local transceiver coil is disconnected from an MRI system and inadvertently
leaves linked to strong MRI RF fields during imaging procedures using other RF
coils. It makes the local transceiver coil damaged such as components
burnt as well as worse plastic housing melt and even causes patients’ skin to
burn during clinical scanning. To prevent from these damages, we propose a new
protection circuit to prevent the unplugged local transceiver coil in MR bore
from RF power radiated by the whole body transmitter coil.
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