| Title |
Design of 8 Channel Insertional pTx Array Coil for 3T Body Imaging |
| Authors |
김영범(Kim, Young Beom) ; 류연철(Ryu, Yeunchul) |
| DOI |
https://doi.org/10.5370/KIEE.2014.63.4.546 |
| Keywords |
Transmission body array ; RF coil ; Strip line TEM element ; Insertional transmit array |
| Abstract |
In this research, we report all the elements are placed in the space above the patient table as a transmit coil to give optimized B1+ field for the body object. Through the simulations, we compared upper-and-lower parts combined 8 channel Tx array to upper only 8 channel Tx array and showed the utilities of B1+ shimming in multi-channel Tx body imaging at 3T. Half-cylinder shaped upper array shows weak B1+ field area around back of patient without B1+ shimming. After B1+ shimming, highly induced SAR places occurred in the arm region due to the close distance to the both end elements which were driven by very high RF current to enhance B1+ in back area. The proposed upper and lower combined array provides an enhanced homogeneous B1+ field in large ROI imaging as a result of shimming over the body size phantom. Through this research we proved the usefulness of the proposed insertional upper and lower parts combined transmit array for 3T body imaging. |