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Abstract #3997

Comparison of True Susceptibility Weighted Imaging (tSWI) with SWI and QSM for Intracranial Hemorrhage

Ashmita De1, Derek J. Emery2, Kenneth S. Butcher3, and Alan H. Wilman1
1Department of Biomedical Engineering, University of Alberta, Edmonton, AB, Canada, 2Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, AB, Canada, 3Division of Neurology, Department of Medicine, University of Alberta, Edmonton, AB, Canada

Quantitative Susceptibility Weighted Imaging or True SWI(tSWI) has been recently developed to overcome the shortcomings of SWI. SWI images are computed from filtered phase images, however, tSWI utilizes the susceptibility maps for its computation. Eight intracranial hemorrhage patients were scanned at 3T with 3D SWI sequence. Blooming effect and phase wrap artifacts that remain on SWI images of hemorrhage are removed in tSWI. tSWI provides better susceptibility weighting than magnitude within the hemorrhage and improved the texture visualization as compared Quantitative Susceptibility Mapping(QSM). Thus, tSWI can be a useful addition for hemorrhage visualization when SWI cannot provide a clear depiction.

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