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http://dx.doi.org/10.5370/KIEE.2014.63.4.546

Design of 8 Channel Insertional pTx Array Coil for 3T Body Imaging  

Kim, Young Beom (Max-Planck-Institute for Neurological Research)
Ryu, Yeunchul (Dept. of Radiology, Pennsylvania State University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.63, no.4, 2014 , pp. 546-550 More about this Journal
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.
Keywords
Transmission body array; RF coil; Strip line TEM element; Insertional transmit array;
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