gms | German Medical Science

55. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e. V. (DGNC)
1. Joint Meeting mit der Ungarischen Gesellschaft für Neurochirurgie

Deutsche Gesellschaft für Neurochirurgie (DGNC) e. V.

25. bis 28.04.2004, Köln

Intraoperative high resolution, distortion free Diffusion-Tensor MR-imaging

Intraoperative, hochaufgelöste, verzerrungsfreie Diffusions-Tensor-MR-Bildgebung

Meeting Abstract

  • corresponding author Stefan Hunsche - Klinik für Stereotaxie und Funktionelle Neurochirurgie, Universitätsklinikum Köln, Köln
  • H. Treuer - Klinik für Stereotaxie und Funktionelle Neurochirurgie, Universitätsklinikum Köln, Köln
  • K. Lackner - Klinik für Radiologie, Universitätsklinikum Köln, Köln
  • V. Sturm - Klinik für Stereotaxie und Funktionelle Neurochirurgie, Universitätsklinikum Köln, Köln

Deutsche Gesellschaft für Neurochirurgie. Ungarische Gesellschaft für Neurochirurgie. 55. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e.V. (DGNC), 1. Joint Meeting mit der Ungarischen Gesellschaft für Neurochirurgie. Köln, 25.-28.04.2004. Düsseldorf, Köln: German Medical Science; 2004. DocMO.01.04

The electronic version of this article is the complete one and can be found online at: http://www.egms.de/en/meetings/dgnc2004/04dgnc0020.shtml

Published: April 23, 2004

© 2004 Hunsche et al.
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Outline

Text

Objective

Diffusion-Tensor MR-Imaging (DTI) is rapidly becoming an established technique that non-invasively maps microscopic structural information of oriented tissue in vivo. We investigated a new approach for intraoperative high resolution, distortion free diffusion tensor MR-imaging in a stereotactic setup.

Methods

Ten patient, fixed with a stereotactic frame, underwent navigated, segmented diffusion weighted MR-imaging. ECG-triggering was used to suppress artifacts from brain pulsation. Diffusion weighting was done in six direction x, y, z, xy, xz, yz. Directional-encoded color and Fractional Anisotropy (FA) maps were derived.

Results

In 7/10 patients high quality diffusion tensor MR-imaging was possible. Derived FA-maps show excellent contrast of white matter fiber architecture. Diffusion-weighted images show negligible distortion by comparing with conventional t2-images. In 3/10 patients image quality was low because of brain pulsation artifacts.

Conclusions

Navigated, segmented diffusion tensor MR-imaging shows a high potential for intra operative imaging. High contrast white matter fiber architecture maps could be derived which may play an important role in certain stereotactic neurosurgery procedures like deep brain stimulation or brachytherapy. But care has to be taken for good ECG-recordings to minimize brain pulsation artifacts.