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Correction of the effect of gradient field non-linearities in phase contrast MRI
Correction of the effect of gradient field non-linearities in phase contrast MRI
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机译:校正相衬MRI中梯度场非线性的影响
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摘要
Errors in qualitative phase contrast measurements due to gradient field heterogeneities are reduced by using either a generalized reconstruction algorithm or an approximate reconstruction algorithm. True velocities are calculated using measured velocity information and phase differences, first moments of gradients, and gyromagnetic ratio.
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