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Reduction of Effect of Concomitant Gradients in Low Magnetic Field MRI via Optimization of Gradient Magnetic System

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Abstract

The effect of concomitant magnetic fields emerging in conjunction with encoding gradients, which is important in the process of the magnetic resonance imaging in low fields, has been considered. The manifestations of concomitant magnetic fields in a concrete gradient system, namely in the system of two coaxial gradient coils, have been thoroughly analyzed. It has been suggested to improve the gradient system via optimization of the interspace between coils on the basis of the standard criterion of the minimum of root-mean-square deviation of the encoding field dependence from a linear one. It has been shown that the optimal interspace is not the Maxwell condition.

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Correspondence to Vyacheslav Frolov.

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Chizhik, V., Frolov, V., Kupryanov, P. et al. Reduction of Effect of Concomitant Gradients in Low Magnetic Field MRI via Optimization of Gradient Magnetic System. Appl Magn Reson 48, 687–698 (2017). https://doi.org/10.1007/s00723-017-0909-6

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  • DOI: https://doi.org/10.1007/s00723-017-0909-6

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