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Abstract

The radiologic assessment of trigeminal neuropathy.

L G Hutchins, H R Harnsberger, C W Hardin, W P Dillon, W R Smoker and A G Osborn
American Journal of Neuroradiology September 1989, 10 (5) 1031-1038;
L G Hutchins
Department of Radiology, University of Utah Medical Center, Salt Lake City 84132.
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H R Harnsberger
Department of Radiology, University of Utah Medical Center, Salt Lake City 84132.
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C W Hardin
Department of Radiology, University of Utah Medical Center, Salt Lake City 84132.
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W P Dillon
Department of Radiology, University of Utah Medical Center, Salt Lake City 84132.
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W R Smoker
Department of Radiology, University of Utah Medical Center, Salt Lake City 84132.
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A G Osborn
Department of Radiology, University of Utah Medical Center, Salt Lake City 84132.
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Abstract

The clinical and radiologic records of 76 patients with trigeminal neuropathy and an abnormal imaging study (CT and/or MR) were analyzed retrospectively. The trigeminal nerve (cranial nerve V) was divided into proximal (brainstem, preganglionic, gasserian ganglion, and cavernous sinus) and distal (extracranial V1, V2, and V3) segments. Lesions were organized according to segments and correlated with the type and distribution of clinical symptoms or signs. The purpose of the study was to (1) determine the efficacy of clinical localization of cranial nerve V lesions, (2) compare CT and MR for cranial nerve V imaging, (3) develop an MR protocol for effective cranial nerve V imaging, and (4) construct a differential diagnosis by anatomic segment for lesions of cranial nerve V. Clinical localization was found to be extremely inaccurate. CT was not as sensitive as MR for lesions involving the basal cisterns and skull base and will not detect the most common brainstem lesions (small infarcts and multiple sclerosis plaques). The MR protocol developed does not rely heavily on clinical localization. On the basis of lesions found in this series, a differential diagnosis by segment was developed. Patients with cranial nerve V symptoms should undergo MR imaging according to the protocol provided in this article. CT is not as effective as MR in imaging some cranial nerve V segments. Clinical localization is inaccurate.

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American Journal of Neuroradiology
Vol. 10, Issue 5
1 Sep 1989
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The radiologic assessment of trigeminal neuropathy.
L G Hutchins, H R Harnsberger, C W Hardin, W P Dillon, W R Smoker, A G Osborn
American Journal of Neuroradiology Sep 1989, 10 (5) 1031-1038;

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The radiologic assessment of trigeminal neuropathy.
L G Hutchins, H R Harnsberger, C W Hardin, W P Dillon, W R Smoker, A G Osborn
American Journal of Neuroradiology Sep 1989, 10 (5) 1031-1038;
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