Detection and tracking enhancement using 4-channels local standalone resonators for catheterized interventional MRI at 3T

Catheter-based RF coils are preferred over conventional external coils due to the weak detection signal from intermediate field region. One of the major issues using catheter RF coils is the design payload (feeding network, preamplifier, balun) associated with the limited space of the catheter. The technique also lacks efficient way to track the catheter during the procedure. To overcome these challenges, we propose 4-channel standalone and wireless resonators to amplify the local B1 field while a body coil is used as the transceiver. The receive B1 fields with and without the local resonators are obtained for field enhancement analysis.