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CHARACTERIZATION OF TIME DELAYS OF RECEIVER DEMODULATION FOR CORRECTING OFF-AXIS MR IMAGING DEGRADATION
CHARACTERIZATION OF TIME DELAYS OF RECEIVER DEMODULATION FOR CORRECTING OFF-AXIS MR IMAGING DEGRADATION
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机译:纠正轴外MR成像退化的接收器解调的时间延迟特性
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摘要
A calibration procedure is performed prior to an off-axis MR scan to measure the MRI system timing errors in applying a frequency modulation waveform to the system receiver. Phase errors which otherwise occur when performing non-Cartesian scans are either prospectively reduced by offsetting the timing error or retrospectively offset by applying phase corrections to the acquired image data.
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