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Stereotact Funct Neurosurg. 2006;84(1):19-23. Epub 2006 Apr 19.

Stereotactic targeting of the ventrointermediate nucleus of the thalamus by direct visualization with high-field MRI.

Author information

1
Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel. Spiegel@sheba.health.gov.il

Abstract

OBJECTIVE:

To evaluate the ability of high-field MRI to consistently produce high-resolution, anatomical images of the thalamic ventrointermediate nucleus (Vim) suitable for stereotactic targeting.

METHODS:

MR images of the thalamus of patients treated for essential tremor were acquired prior to treatment using a 3-tesla MR system. Similar images were acquired in 6 volunteers using, for comparison, both a 1.5-tesla and a 3.0-tesla system.

RESULTS:

The thalamic Vim was clearly and consistently delineated on the 3-tesla images. These images were successfully used for target localization in essential tremor patients. In the volunteers data, images acquired using the 1.5-tesla system were inferior to those acquired using the 3-tesla system, lacking the ability to consistently provide reliably defined borders of the Vim.

CONCLUSION:

3-Tesla MRI can provide high-quality depiction of the Vim, potentially enabling accurate treatment planning by direct visualization and definition of the targeted Vim.

PMID:
16636642
DOI:
10.1159/000092683
[Indexed for MEDLINE]
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