K-space synthesis for MR imaging in the presence of gradient field nonlinearity
AssigneeGeneral Electric Company
InventorYudong Zhu
Life of this patent
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Abstract
In an embodiment, a method for reconstructing a corrected Magnetic Resonance (MR) image from acquired MR data subjected to gradient field non-linearity comprises producing a data set that corresponds to linear gradient fields responsive to the acquired MR data and reconstructing the data set into the corrected MR image. Thus, correction for distortion is a k-space based correction method.
Claims6
A method for reconstructing a corrected Magnetic Resonance (MR) image for MR data subjected to gradient field non-linearity, said method comprising:
- producing a data set from MR signal measurements, said data corresponding to linear gradient fields responsive to said MR data;
- and,
- reconstructing said corrected MR image using said data set to correct for distortions due to gradient field non-linearity.
A method for reconstructing a corrected image in a Magnetic Resonance Imaging (MRI) system in the presence of gradient field non-linearity, said method comprising
- pre-computing a traversing trajectory responsive to acquired MR data;
- traversing said acquired MR data in k-space in accordance with said pre-computed trajectory;
- producing a data set from said MR data, said data set corresponding to linear gradient fields responsive to said acquired MR data;
- and,
- reconstructing said corrected MR image using said data set to correct for distortions due to gradient field non-linearity.
Dependencies are inferred from the claim text.