| 摘要 |
In nonlinear measurement in which a dephasing readout gradient magnetic field is not used, a positional shift of the k space data, which is caused by a difference between a readout gradient magnetic field actually applied and the calculated value, and a deterioration in the image quality resulting therefrom are reduced. In order to do so, in the invention, when executing an imaging pulse sequence including a nonlinear measurement which does not use a dephasing gradient magnetic field, a prescan sequence is executed and a correction value for correcting the shift of the readout gradient magnetic field from the set value is calculated from the data acquired in the prescan. When gridding the data acquired in the imaging pulse sequence, a parameter value of the gridding is corrected using the correction value to perform the gridding.
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