A Novel Development in Three-Dimensional Automated Shimming Techniques
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چکیده
We present a method of 3D automated shimming in high-resolution applications. This does not heavily rely on Pulsed Field Gradient (PFG) modules and can be used with any spectrometer equipped with shims and homospoil facilities at least. The method exploits Fourier imaging technique for mapping of static magnetic field inhomogeneity and field shapes generated by shim coils, which are used as input for calculations of shim corrections by least squares fitting. The results of testing with protonated and deuterated solvents with 13 shims set on a Unity INOVA 300 spectrometer are also presented.
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تاریخ انتشار 2005