Fast Calculation of Susceptibility Weighted Imaging in Arbitrary Slice Orientation

To achieve SWI based on susceptibility maps without streaking artifacts in short calculation time, a method was developed for susceptibility-weighted imaging using a susceptibility map calculated without regularization in very small iteration number. To evaluate the usefulness of the proposed method, image contrasts of axial slices in closed-type MRI and open-type MRI acquired by the conventional and the proposed method were compared. The results suggest that the proposed method can enhance contrast of regions with high magnetic susceptibility, such as veins or iron depositions, in arbitrary slice orientation within about 20 seconds without streaking artifacts.

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