Mitigation of blurring due to view-angle tilting in multispectral imaging

AR Toews, PK Lee, D Yoon… - Proc Intl Soc Mag Reson … - archive.ismrm.org
Imaging near metal is challenging due to severe metal-induced field inhomogeneities.
Multispectral imaging sequences employ view-angle tilting (VAT) to correct in-plane
distortions due to nearby metal at the expense of blurring the entire image. We exploit the
additional phase-encoding dimension acquired in multispectral imaging in order to reduce
the VAT-induced blur. The method primarily consists of regridding k-space measurements to
avoid the VAT-induced shear. Results on a grid phantom demonstrate the ability of this …
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