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Radiology, Vol 193, 155-159, Copyright © 1994 by Radiological Society of North America

ARTICLES

Trigeminal nerve and ganglion in the Meckel cave: appearance at CT and MR imaging

D Rubinstein, RL Stears and JC Stears
Department of Radiology, University of Colorado Health Sciences Center, Denver 80262.

PURPOSE: To demonstrate the anatomy of the Meckel cave, which is normally seen by means of dissection, with high-resolution computed tomography (CT) and magnetic resonance (MR) imaging. MATERIALS AND METHODS: Twenty cadaver specimens were scanned with 1-mm contiguous axial and coronal CT sections. Seven specimens were also scanned with 1- mm contiguous parasagittal sections and were dissected for correlation with CT images. Two volunteers also underwent high-resolution, fast spin-echo MR imaging. MR images were compared with the CT images and the results of dissection. RESULTS: Dissection and CT and MR imaging demonstrated that the trigeminal nerve within the Meckel cave consists of numerous small fibers and that the trigeminal ganglion consists of a small amount of solid tissue. CONCLUSION: In vivo, high-resolution, fast spin-echo imaging can demonstrate the anatomy of the trigeminal nerve in the Meckel cave because of improved spatial and contrast resolution.


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