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首页> 外文期刊>Applied Magnetic Resonance >Experimental Validation of a Multi-Square Slot Surface Coil for UHF MRI at 11.7 T
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Experimental Validation of a Multi-Square Slot Surface Coil for UHF MRI at 11.7 T

机译：UHF MRI在11.7 T的多方形槽面线圈的实验验证

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摘要

A multi-square slot surface coil was developed for rodent MRI at 11.7 T. The coil prototype was 20 mm in diameter with six square slots. Electromagnetic simulations of the slotted and circular coils were conducted to evaluate the signal-to-noise ratio (SNR) and absorption rate (SAR). Experimental SNR results were also calculated and compared, and the comparison showed good agreement between experimental and numerical data. The slotted coil produces lower predicted SAR for points near the coil plane when compared to the SAR numerical values for the circular coil. The performance of prototype, measured via the Q factor, was Q(l)6.5 = Q(u), and its noise figure was 1.6. A commercial circular coil was used to acquire phantom images for comparison purposes. The slotted surface coil showed comparable performance with a commercial circular coil in UHF MRI applications. These experimental and numerical results demonstrate the feasibility of the slotted coil design at 11.7 T.
机译：为啮齿动物MRI开发了一个多方形槽面线圈，11.7吨。线圈原型的直径为20毫米，具有六个方形槽。 进行了开槽和圆形线圈的电磁模拟以评估信噪比（SNR）和吸收率（SAR）。 还计算了实验性SNR结果，比较了实验和数值数据之间的比较。 与圆形线圈的SAR数值相比，开槽线圈在线圈平面附近的点产生更低的预测SAR。 通过Q因子测量的原型的性能为Q（l）6.5 = q（u），其噪声数字为1.6。 使用商业圆形线圈来获取用于比较目的的幻像图像。 开槽的表面线圈在UHF MRI应用中显示出与商用圆形线圈相当的性能。 这些实验性和数值结果表明，开槽线圈设计的可行性在11.7吨。

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  • 来源
    《Applied Magnetic Resonance》 |2020年第8期|共9页
  • 作者

    Solis-Najera S.; Vazquez F.; Martin R.; Marrufo O.; Medina L.; Rodriguez A. O.;

  • 作者单位

    Univ Nacl Autonoma Mexico Fac Ciencias Dept Fis Mexico City 04510 DF Mexico;

    Univ Nacl Autonoma Mexico Fac Ciencias Dept Fis Mexico City 04510 DF Mexico;

    Univ Nacl Autonoma Mexico Fac Ciencias Dept Fis Mexico City 04510 DF Mexico;

    Natl Inst Neurol &

    Neurosurg MVS Dept Neuroimaging Mexico City 14269 DF Mexico;

    Univ Nacl Autonoma Mexico Fac Ciencias Dept Fis Mexico City 04510 DF Mexico;

    Univ Autonoma Metropolitana Iztapalapa Dept Elect Engn Mexico City 09340 DF Mexico;

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