Pure phase encode magnetic field gradient monitor.
Journal of Magnetic Resonance(2009)
Abstract
Numerous methods have been developed to measure MRI gradient waveforms and k-space trajectories. The most promising new strategy appears to be magnetic field monitoring with RF microprobes. Multiple RF microprobes may record the magnetic field evolution associated with a wide variety of imaging pulse sequences. The method involves exciting one or more test samples and measuring the time evolution of magnetization through the FIDs. Two critical problems remain. The gradient waveform duration is limited by the sample T2∗, while the k-space maxima are limited by gradient dephasing.
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Key words
NMR probe,Micro RF coil,Pure phase encode,Gradient waveform,Eddy current,k-space trajectory,Magnetic field monitoring (MFM)
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