TY - GEN
T1 - Evaluation of common RF coil setups for MR imaging at ultrahigh magnetic field
T2 - 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies, ISABEL'11
AU - Lu, Jonathan
AU - Pang, Yong
AU - Wang, Chunsheng
AU - Wu, Bing
AU - Vigneron, Daniel B.
AU - Zhang, Xiaoliang
PY - 2011
Y1 - 2011
N2 - This study is an evaluation of the ratio of electric field to magnetic field (E/B 1), specific absorption rate (SAR) and signal-to-noise ratio (SNR) generated by three different RF transceiver coil setups: surface coil, surface coil with shielding, and microstrip using a finite discrete time domain (FDTD) simulation in the presence of a head phantom. One of our main focuses in this study is to better understand coil designs that would improve patient safety at high fields by studying a coil type that may potentially minimize SAR while examining potential changes in SNR. In the presence of a human head load, the microstrip's E/B 1 ratio was on average smallest while its SAR was also on average smallest of the three setups, suggesting the microstrip may be a better RF coil choice for MRI concerning patient safety and parallel excitation applications than the other two coils. In addition, the study suggests that the microstrip also has a higher SNR compared with the other two coils demonstrating the possibility that the microstrip could lead to higher quality MRI images.
AB - This study is an evaluation of the ratio of electric field to magnetic field (E/B 1), specific absorption rate (SAR) and signal-to-noise ratio (SNR) generated by three different RF transceiver coil setups: surface coil, surface coil with shielding, and microstrip using a finite discrete time domain (FDTD) simulation in the presence of a head phantom. One of our main focuses in this study is to better understand coil designs that would improve patient safety at high fields by studying a coil type that may potentially minimize SAR while examining potential changes in SNR. In the presence of a human head load, the microstrip's E/B 1 ratio was on average smallest while its SAR was also on average smallest of the three setups, suggesting the microstrip may be a better RF coil choice for MRI concerning patient safety and parallel excitation applications than the other two coils. In addition, the study suggests that the microstrip also has a higher SNR compared with the other two coils demonstrating the possibility that the microstrip could lead to higher quality MRI images.
KW - electromagnetic calculation
KW - high field
KW - microstrip
KW - numerical modeling
KW - RF coil
KW - signal-to-noise ratio (SNR)
KW - specific absorption rate (SAR)
UR - https://www.scopus.com/pages/publications/84863040856
U2 - 10.1145/2093698.2093768
DO - 10.1145/2093698.2093768
M3 - Conference contribution
AN - SCOPUS:84863040856
SN - 9781450309134
T3 - ACM International Conference Proceeding Series
BT - Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies, ISABEL'11
Y2 - 26 October 2011 through 29 October 2011
ER -