Demonstration of a bilaterally duplicated hypoglossal canal.

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Presentation transcript:

Demonstration of a bilaterally duplicated hypoglossal canal. Demonstration of a bilaterally duplicated hypoglossal canal. Oblique reconstructed FIESTA images of a patient with a duplicated hypoglossal canal on both sides. Thumbnails indicate the reconstruction planes. Open thick arrows indicate borders of the caudal part of the duplicated canal; crossed arrows, the canalicular segments of the hypoglossal nerves. Note that 2 distinct canalicular nerve root bundles can be identified, both of which are demonstrated simultaneously in the images (crossed arrows). B, Dotted arrow indicates the bony septum between both the cranial and the caudal parts of the duplicated hypoglossal canal. J. Linn et al. AJNR Am J Neuroradiol 2009;30:34-41 ©2009 by American Society of Neuroradiology