Two-dimensional spectral-spatial EPR imaging with the rapid scan and modulated magnetic field gradient
Two-dimensional spectral-spatial EPR imaging with the rapid scan and modulated magnetic field gradient
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DOI：
10.1016/j.jmr.2014.03.001
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发表时间：
2014-06-01
影响因子：
2.2
通讯作者：
Jurga, J.
中科院分区：
文献类型：
--
作者：
Czechowski, T.;Chlewicki, W.;Jurga, J.
提出了一种快速谱空间电子顺磁共振成像（EPRI）的新方法。为了减少投影采集的时间，我们建议将使用高频正弦调制的塞曼磁场快速扫描与同时应用的磁场梯度相结合，其幅度在低频下调制。对由两个 LiPc 样品组成的模型进行的研究证实了该方法的正确性。使用迭代算法重建所采集数据的光谱空间图像。所提出的方法允许在 200 ms 的时间内获取 800 个投影的光谱空间图像。 (C) 2014 Elsevier Inc. 保留所有权利。
A new method for fast spectral-spatial electron paramagnetic resonance imaging (EPRI) is presented. To reduce the time of projections acquisition we propose to combine rapid scan of Zeeman magnetic field using high frequency sinusoidal modulation with simultaneously applied magnetic field gradients, whose amplitude is modulated at low frequency. The correctness of the method is confirmed by studies carried out on a phantom consisting of two LiPc samples. The spectral-spatial images from the acquired data are reconstructed using iterative algorithms. The proposed method allows to acquire the spectral-spatial image with 800 projections at 200 ms. (C) 2014 Elsevier Inc. All rights reserved.