Improving SNR and RF by Adding a Stripline to Endorectal Coil for the 7T

Catalina S. Arteaga¹, Bob van den Bergen¹, Peter L. Luijten¹, Uulke A. van der Heide¹, Dennis W.J. Klomp¹

Theorically adding tranceive/receive elements will increase the SNR and optimize the RF power deposition. We added a stripline into an endorectal loop coil system for the 7T MR. The obtained results proved that indeed the second element increased the SNR and homogeneity of the transmit field. Simulation results for the transmit field in quadrature and anti-quadrature and receive fields for the loop coil and the stripline were obtained showing similar results to the MR measurements. Simulations were also obtained for the calculation of the SAR for only the loop and the combined coils system obtaining a SAR max of 42% less for the combined system than for the loop only.