MR cisternography in the posterior fossa: the evaluation of trigeminal neurovascular compression

To evaluate the clinical significance of 3D-MR cisternography on the demonstration of neurovascular compression and offer valuable imaging information of trigeminal neuralgia to neurosurgeons, we reviewed clinical and image data of 146 consecutive patients

Anqi Xiao

2012

Scholarcy highlights

  • Trigeminal neuralgia caused by vascular compression is commonly seen clinically, and accurate diagnosis often depends on the imaging the evidence of trigeminal neurovascular compression
  • The MR devices used for MR cisternography included Trio 3.0T and Avanto 1.5T, and Achieva 3.0T
  • In 8 cases with trigeminal compression caused by uncertain vessels, all the offended sites of the trigeminal nerve root were at root entry zone
  • Consistent with the literature, we found that 61.7 % of related arteries, including superior cerebellar arteries, Anterior inferior cerebellar artery, basilar arteries, and vertebral arteries, mainly as a form of curve went into the axilla to press the nerve
  • In total, 75 patients were found with trigeminal neurovascular compression on MRC
  • To the patients suffering trigeminal neuroglia, the status of ipsilateral trigeminal nerve touched by vessels, including thinning, atrophy and displacement on image, should be determined as the conclusive evidence of trigeminal NVC
  • In case of uncertain vascular origin or nature on MR cisternography, we recommend performing MRA to help determining related vessels and improving diagnostic accuracy

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