Vijayanand Alagappan1, Kawin Setsompop2, Ulrich Fontius3, Franz Schmitt3, Elfar Adalsteinsson4,5, Lawrence Leroy Wald2,5
1Department of Radiology, A.A Martinos Center for Biomedical Imaging, Charlestown, MA, USA; 2Department of Radiology, A.A Martinos Center for Biomedical Imaging, Charlestown, MA, USA; 3Siemens Healthcare, Erlangen, Germany; 4Department of Electrical Engineering and Computer Science, MIT, Cambridge, MA, USA; 5Health Science and Technology, MIT, Cambridge, MA, USA
We describe an 8-channel concentrically shielded loop transmit/receive coil for parallel excitation at 7T. Decoupling the neighboring elements with the concentrically shielded loops gives an extra degree of freedom on the size of the loop elements. The size of the coil could be optimized to improve the B1+ homogeneity. The constructed concentrically shielded loop coil is compared against an 8-channel stripline array coil on its performance for B1+ shimming. Initial results show that the concentric shielded loops serves as a good compromise between the conventional loop and the stripine coil elements.
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