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Abstract #0121

Slab Profile Encoding for Minimizing Venetian Blind Artifact in 3D Diffusion-Weighted Multislab Acquisition

Anh Tu Van1, Murat Aksoy1, Samantha J. Holdsworth1, Daniel Kopeinigg1, Sjoerd B. Vos2, Roland Bammer1

1Radiology, Stanford University, Palo Alto, CA, United States; 2Image Sciences Institute, University Medical Center Utrecht, Utrecht, Netherlands

Three-dimensional high-resolution diffusion imaging is feasible in terms of scan time when multislab acquisition is used. However, the main challenge of multislab acquisitions is the slab boundary artifacts caused by an imperfect slab-selective profile along the slice dimension. By reconstructing all the slab collectively using a SENSE-like method with the slab excitation profiles as the sensitivity maps, the slab boundary artifacts can be mitigated.

Keywords

accompanied accurate achieving acquisition added adjacent advanced aliased aliasing alto arrow artifact artifacts audience averaging benign blind boundaries calibration call coil collectively combining compromise considered corresponds cover crop cropping crosstalk cuts diffusion divide dropout dropouts edge efficient embedded employed encoded encoding enough essentially estimation excitation expected expressed extending field final flat form foundation full give gives giving gradient highly history homogeneity homogeneous imperfect implemented indicated individual inhomogeneity introduce lengthens like location long longer magnitudes maps medical middle might minimal minimizing mitigate mitigated mitigates much necessary need novel object otherwise overlapped overlapping oversampling parallel performance phantom pixels profile profiles proposed pulse radiology reconstructed reconstructing reconstruction reducing reflect reformat reformatted reformatting remains remedy removes require requires researchers resolution respectively ripple ripples rise roll sciences sense sensitivity separate several short shorter since slab slabs slice slices space spend spin squares still system target technology thick traditionally transition vector venetian view ways worsens writing zoom