Off-resonance correction of MR images
In magnetic resonance imaging (MRI), the spatial inhomogeneity of the static magnetic field can cause degraded images if the reconstruction is based on in verse Fourier transformation. This paper presents and discusses a range of fast reconstruction algorithms that attempt to avoid such degradation by taking the field inhomogeneity into account. Some of these algorithms are ne cv, others are modified versions of known algorithms. Speed and accuracy of all these algorithms are demonstrated using spiral MRI.
off-resonance correction magnetic resonance imaging conjugate phase reconstruction simulated phase evolution and rewinding