Turk Neurosurg. 2013;232:218-25. doi: 10.5137/1019-5149.JTN.6768-12.0.

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

Anqi X1Ding LJiahe XZhenlin LChunchao XChao Y.

Author information

  • 1West  China Hospital, Sichuan University, Department of Neurosurgery, Chengdu,  P. R. China.

Abstract

AIM:

To evaluate the utility of 3D-magnetic resonance cisternographyMRC of posterior cranial fossa in visualizing trigeminal neurovascular compression in patients with trigeminal neuralgia.

MATERIAL AND METHODS:

146 consecutive patients in the period from June 2010 to July 2011 in our institute diagnosed with trigeminal neuralgia underwent MRC on the posterior cranial fossa. MR devices used for MRC included two sets of 3.0 tesla and one set of 1.5 tesla. The hydrography sequences for MRC included 3D-SPACE and 3D-DRIVE.

RESULTS:

In total, 75 patients 51.4% were found with trigeminal neurovascular compression on MRC. Among them, 25 patients underwent microvascular decompression. Intraoperatively, 20 patients 80% had related arteries consistent with imaging manifestations on MRC. Nevertheless, the arterial compression combined with petrosal vein could not be identified on MRC in 3 of the 20 patients. In the inconsistent 5 cases, the involved vessels were confirmed as superior petrosal veins during the surgery.

CONCLUSION:

3D-MRC has prominent clinical value in determining the trigeminal neurovascular compression and identifying the related vessels. However, MRC does have certain limitations on identifying petrosal vein compression.

PMID: 23546908 DOI: 10.5137/1019-5149.JTN.6768-12.0


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