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Abstract #3477

Banding artifacts reduction for lumbosacral plexus imaging with balanced FFE (b-FFE)

Geli Hu1, Jiazheng Wang1, Qingping Gu1, Yang Zhang1, and Jianxia Cao1
1Philips Healthcare, Beijing, China

The balanced FFE (b-FFE) sequence has the advantages of high resolution, SNR, CNR and superior differentiation between fluid and tissue. Therefore, it can be used for lumbosacral plexus imaging [1]. However, black band-like artifacts are frequently observed due to intra-voxel signal dephasing at the presence of magnetic field inhomogeneity. Here we proposed using a RF phase cycling technique (b-FFE-XD) to suppress the banding artifacts. The RF phase was set as [0,180+1*X, 2*X, 180+3*X,4*X,…] in consequence to limit the intravoxel dephasing, where X=n*360/NSA, and n is the nth average. Results demonstrated successful removal of banding artifacts with the proposed technique.

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