Gradient Delay Correction for FSE-MRI

In this paper, the impact of the gradient delay and its anisotropy on FSE-MRI was studied. It is shown by experiments that FSE imaging sequence is sensitive to uncorrected gradient delay. A simple correction method of this problem is proposed, in which the delay of the gradient waveform is compensated by shifting the gradient waveform directly. We have demonstrated that the proposed method is effective to overcome the image quality degradation cause by the gradient delay. The correction does not depend on specific samples or subjects and total delay can be used without recalibrating in each scan.