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Combination of magic-echo and single-point imaging techniques for solid-state MRI

机译：魔术回波和单点成像技术相结合的固态MRI

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Due to reduced molecular motion the transverse relaxation time T-2 in solid materials is typically shorter by a factor of 10(3) to 10(5) in comparison to those in liquids, resulting in a large intrinsic nuclear magnetic resonance line-width that can be well above 20 kHz. Therefore high-resolution solid-state magnetic resonance imaging requires either very strong gradients or special line-narrowing techniques. Single-point imaging (SPI) is a successful pure phase encoding sequence in imaging soft-solid materials; however, when used to study rigid solid materials it still suffers from a very long acquisition time and large gradients. On the other hand, magic echo is a technique that can be used to effectively refocus dipolar interaction, thus achieving a line narrowing. Therefore, the aim of this work is to improve the signal intensity with the combination of the magic echo technique and the SPI sequence. In this paper first applications and a comparison of the SPI sequence with a combination of the magic echo and the SPI sequence to image structures of solid-state materials are presented. [References: 19]
机译：由于减少了分子运动，固体材料中的横向弛豫时间T-2通常比液体中的弛豫时间T-2缩短10（3）至10（5）倍，从而导致较大的固有核磁共振线宽，可以远高于20 kHz。因此，高分辨率固态磁共振成像需要非常强的梯度或特殊的线窄技术。单点成像（SPI）是对软固体材料进行成像的成功的纯相位编码序列。然而，当用于研究刚性固体材料时，它仍然遭受着非常长的采集时间和大梯度的困扰。另一方面，魔术回声是可以用来有效地重新聚焦偶极相互作用从而实现线变窄的技术。因此，这项工作的目的是结合魔术回声技术和SPI序列来改善信号强度。在本文中，首先介绍了SPI序列以及幻回波和SPI序列对固态材料图像结构的组合，并进行了比较。 [参考：19]

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