Robust diffusion-prepared neurography of the complete brachial plexus facilitated by an optimized shimming strategy.
Jos Oudeman 1 , Bram F Coolen 1 , Camiel Verhamme 2 , Mario Maas 1 , Andrew Webb 3 , Gustav J Strijkers 4 , and Aart J Nederveen 1
Radiology, Academic Medical Center,
Amsterdam, Noord-Holland, Netherlands,
Academic Medical Center, Amsterdam, Noord-Holland,
Leiden University Medical Center, Leiden, Zuid-Holland,
engineering and physics, Academic Medical Center,
Amsterdam, Noord-Holland, Netherlands
New imaging methods of the brachial plexus are believed
to assist in diagnosis of immune mediated diseases. In
this study, we optimized a 3D diffusion prepared iMSDE
sequence to include the full brachial plexus and
shoulders. Although giving excellent contrast of the
nerves, poor fat-suppression and a poor signal to noise
ratio due to B0 inhomogeneities are often a problem. To
overcome this problem we tested the use of a neck pillow
filled with pineapple juice. Secondly we compared image
based shimming to volume shimming. The use of the pillow
in combination with IB-shimming showed the best result.
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