反演法设计磁共振射频阵列线圈的研究

doi:10.3969/j.issn.0258-8021.2012.06.004

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Abstract Advancement of the magnetic resonance radio frequency (RF) phased array coil technology further can improve the MRI quality. However, the commercial RF phased arrays are not organ-oriented, not able to highlight the located ROI. In this paper, an inverse method is presented for designing RF phased array transmit coil in MRI. First, the ROI was set according to the clinical need, and a target field function was created based on the inverse technology. Next, the current density of the phased array coil was calculated accordingly. The highly ill-posed problem was solved using regularization strategy. Last, the contour charts of the RF phased array coil were obtained by using the stream function technology. In this paper, we designed three kinds of phased array transmit coil with different ROI based on different clinical needs. The magnetic field intensity within the ROI reached higher than 0.957 4 A/m， the magnetic field homogeneity of 10 cm ROI was under 5×10^-8. The experimental results showed that the RF phased array coil designed using the inverse method met theory demands and was capable of used in MRI.
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Key words： MRI phased array coil inverse method regularization technology

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	ZHANG ZhanSheng XIN XueGang^*

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ZHANG ZhanSheng XIN XueGang^*. The Study on the Design of MR RF Phased Array Coil using Inverse Method[J]. journal1, 2012, 31(6): 822-830.

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http://cjbme.csbme.org/EN/10.3969/j.issn.0258-8021.2012.06.004 OR http://cjbme.csbme.org/EN/Y2012/V31/I6/822

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