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000916400 1001_ $$0P:(DE-Juel1)164150$$aHong, Suk-Min$$b0
000916400 245__ $$aDesign of a folded, double-tuned loop coil for 1 H/X-nuclei MRI applications
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000916400 520__ $$aMR measurement using a combination of X-nuclei and proton MRI is of great interest as the information provided by the two nuclei is highly complementary, with the X-nuclei signal giving metabolic data relating to potential biomarkers and the proton signal affording anatomical details. Due to the relatively weak signal obtained from X-nuclei, combining an X-nuclei coil with a proton coil is also advantageous for B0 shimming and scout images. One approach to building a double-resonant coil is to modify the coil geometry. Here, to achieve double-resonance, a 2× 1 ladder network was designed and tuned at both proton and X-nuclei frequencies successfully. Due to coupling between closed wires, the double-tuned coil generates a shifted transmit efficiency pattern compared to that of the single-tuned loop at the 7T MRI proton frequency. To compensate for the shifted pattern, one part of the 2× 1 ladder network was folded, and the tuning and performance of the folded double-tuned coil were evaluated in simulations and MR measurements. The proposed structure was further evaluated with overlapped decoupling in a receive-only array. The results show that our proposed folded double-tuned coil moderated the shifted pattern of a straight double-tuned loop coil and provided minimum losses at both proton and X-nuclei frequencies. The proposed folded double-tuned loop coil has also been further extended to a receive-only array.
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000916400 7001_ $$0P:(DE-Juel1)164356$$aChoi, Chang-Hoon$$b1
000916400 7001_ $$0P:(DE-Juel1)131794$$aShah, N. J.$$b2$$ufzj
000916400 7001_ $$0P:(DE-Juel1)131761$$aFelder, Jorg$$b3$$eCorresponding author
000916400 773__ $$0PERI:(DE-600)2068206-2$$a10.1109/TMI.2022.3228305$$gp. 1 - 1$$n5$$p1424 - 1430$$tIEEE transactions on medical imaging$$v42$$x0278-0062$$y2022
000916400 8564_ $$uhttps://juser.fz-juelich.de/record/916400/files/Design_of_a_Folded_Double-Tuned_Loop_Coil_for_H_X-Nuclei_MRI_Applications.pdf
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