A prototype, high-performance gradient system capable of 80 mT/m and 700 T/m/s with asymmetric design has been installed. Zeroth-order concomitant field terms endemic to MRI systems employing asymmetric gradient designs cause blurring and ghosting in spiral scans, as well as image quality degradation in fast-spin-echo imaging. The theory is reviewed, and a real-time hardware compensation is demonstrated to correct for the effect.
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