Enhanced 3D CISS images through the right side of the Meckel cave in a 62-year-old woman. Enhanced 3D CISS images through the right side of the Meckel.

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Presentation transcript:

Enhanced 3D CISS images through the right side of the Meckel cave in a 62-year-old woman. Enhanced 3D CISS images through the right side of the Meckel cave in a 62-year-old woman. TL = temporal lobe.A, Sagittal image shows a small portion of the sensory root (SeR) at its entry into the cave. Trigeminal ganglion (thick white arrow) and its lips (thin white arrows) are shown at the anterior end of the cave. Anterior margin of the ganglion is clearly differentiated from the dural wall (white arrowhead) of the cave. Two sensory rootlets (long black arrows) emerge from the sinus ganglii (short black arrow) and pass through the trigeminal cistern. Maxillary nerve (V2) courses along the inferior wall of the cavernous sinus, surrounded by enhancing venous channels (black arrowhead). CA = carotid artery, FR = foramen rotundum, PC = prepontine cistern, TE = cerebellar tentorium.B, Coronal image shows the cave bilaterally. Trigeminal ganglion (thick white arrows) lies along the anteroinferior border of the cave. Less-enhancing dura (arrowheads) is clearly differentiated from the ganglion. Multiple, small sensory rootlets (thin white arrows) are seen in the trigeminal cistern (TC). Mandibular nerve (V3) is partly shown on the right side in the foramen ovale (FO). Indra Yousry et al. AJNR Am J Neuroradiol 2005;26:1128-1135 ©2005 by American Society of Neuroradiology