Optimal arrangement of finite element loop arrays for parallel magnetic resonance imaging in the human head at 400 MHz

Pfrommer, A; Henning, A

doi:10.1109/mwsym.2015.7166753

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…Differences in intensities near individual surface loops are still observed, which could be optimized further by varying the phase shifts between the loops. The decrease of the RF field in the gap areas implies that the array geometry needs to be optimized further for specific applications (eg, head and body imaging) . For example, for large sample size applications (eg, human body) where array geometry will most likely stay relatively flat, surface loops need to overlap in both directions to improve the coverage.…”

Section: Discussionmentioning

confidence: 99%

Novel splittable N‐Tx/2N‐Rx transceiver phased array to optimize both signal‐to‐noise ratio and transmit efficiency at 9.4T

Avdievich

Giapitzakis

Henning

2015

Magnetic Resonance in Med

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As a proof of concept, we developed and constructed a novel splittable transceiver phased array that allows doubling of the number of Rx elements while keeping both Tx and Rx elements at the same distance from the subject. Both Tx and Rx performance can be optimized at the same time using this method. Magn Reson Med 76:1621-1628, 2016. © 2015 International Society for Magnetic Resonance in Medicine.

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Section: Discussionmentioning

confidence: 99%

Novel splittable N‐Tx/2N‐Rx transceiver phased array to optimize both signal‐to‐noise ratio and transmit efficiency at 9.4T

Avdievich

Giapitzakis

Henning

2015

Magnetic Resonance in Med

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Investigating the Influence of Spatial Constraints on Ultimate Receive Coil Performance for Monkey Brain MRI at 7 T

Gao

Chen

Zhang

2018

IEEE Trans. Med. Imaging

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The RF receive coil array has become increasingly vital in current MR imaging practice due to its extended spatial coverage, maintained high SNR, and improved capability of accelerating data acquisition. The performance of a coil array is intrinsically determined by the current patterns generated in coil elements as well as by the induced electromagnetic fields inside the object. Investigations of the ultimate performance constrained by a specific coil space, which defines all possible current patterns flowing within, offer the opportunity to evaluate coil-space parameters (i.e., coverage, coil-to-object distance, layer thickness, and coil element type) without the necessity of considering the realistic coil element geometry, coil elements layout, and number of receive channels in modeling. In this paper, to mimic 7-T monkey RF head coil design, seven hypothetical ultimate coil arrays with different coil-space configurations were mounted over a numerical macaque head model; by using Huygens's surface approximation method, the influences of coil-space design parameters were systematically investigated through evaluating the spatial constrained ultimate intrinsic SNR and ultimate g-factor. Moreover, simulations were also conducted by using four coil arrays with limited number of loop-only elements, in order to explore to what extent the ultimate coil performance can be achieved by using practical coil designs, and hence several guidelines in RF coil design for monkey brain imaging at 7 T have been tentatively concluded. It is believed that the present analysis will offer important implications in novel receive array design for monkey brain MR imaging at ultra-high field.

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Optimal arrangement of finite element loop arrays for parallel magnetic resonance imaging in the human head at 400 MHz

Cited by 2 publications

References 11 publications

Novel splittable N‐Tx/2N‐Rx transceiver phased array to optimize both signal‐to‐noise ratio and transmit efficiency at 9.4T

Novel splittable N‐Tx/2N‐Rx transceiver phased array to optimize both signal‐to‐noise ratio and transmit efficiency at 9.4T

Investigating the Influence of Spatial Constraints on Ultimate Receive Coil Performance for Monkey Brain MRI at 7 T

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