Automated test apparatus for bench-testing the magnetic field homogeneity of NMR transceiver coils.
Automated test apparatus for bench-testing the magnetic field homogeneity of NMR transceiver coils.
复制标题
用于对 NMR 收发器线圈的磁场均匀性进行台架测试的自动测试装置。
DOI：
10.1016/j.jmro.2023.100142
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发表时间：
2024
影响因子：
--
通讯作者：
Martin,RachelW
中科院分区：
文献类型：
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作者：
Uribe,JoseL;Jimenez,MatthewD;Kelz,JessicaI;Liang,Jeanie;Martin,RachelW
我们描述了一种用于测量核磁共振（NMR）收发器线圈磁场剖面的自动不干涉台架测试方法。散射参数（s参数）数据采用便携式网络分析仪测量，并将结果自动导出到计算机中绘图和查看。该分析大大减少了测量收发器线圈磁场（b1）均匀性剖面所需的时间，同时也提高了相对于人工操作的准确性。在这里，我们在溶液态核磁共振探针的鞍形线圈上演示了该方法，并与使用核磁共振波谱测量获得的剖面进行了比较。我们还测量了变螺距螺线管的轴向均匀性。
We describe an automated hands-off bench testing method for measuring the magnetic field profile of transceiver coils for nuclear magnetic resonance (NMR). The scattering parameter (S-parameter) data is measured using a portable network analyzer, and the results are automatically exported to a computer for plotting and viewing. This assay dramatically reduces the time needed to measure the magnetic field (B 1) homogeneity profile of a transceiver coil while also improving accuracy relative to manual operation. Here, we demonstrate the method on a saddle coil of a solution-state NMR probe in comparison to profiles obtained using NMR spectroscopy measurements. We also measure the axial homogeneity of a variable-pitch solenoid.