Magnetic resonance imaging compatible ultra-wideband antennas

We have studied the performance of ultra-wideband (UWB) antennas for biomedical imaging inside the 3-Tesla magnetic resonance imaging (MRI) system of PTB Berlin. The strong static and time variant magnetic fields caused severe mechanical and electrical interactions due to the induced electromagnetic forces. On the other side, the MRI signals can be also affected by the presence of the UWB antennas. The challenges for MRI compatible antennas have been identified and antenna modifications devised, to prevent the deteriorating interactions between MRI and an UWB antenna and make efficient use of a combination of both techniques. This approach opens the potential for using UWB radar as a navigator technique for improved magnetic resonance imaging.