Intraoperative Neuronavigation von Hirntumoren unter Einschluss des Tractus corticospinalis mit Hilfe von Diffusion Tensor Imaging und Fiber Tracking

Dellani, Paulo R.; Gläser, Martin; Tropine, Andrei; Vučurević, Goran; Bauermann, T.; Wille, Paulo Roberto; Strecker, Ulrich; Stadie, Axel; Perneczky, Axel; Stoeter, P.

doi:10.1007/s00062-004-5396-0

Cited by 2 publications

(1 citation statement)

References 40 publications

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“…Since stimulation results were rarely positive in a distance > 0.5 cm between trajectories and the stimulation position inside the cavity after tumor removal, and postoperative deficits were not seen above this distance, we assume an average reliability of the trajectory position around this value [52]. Of course, influences of brain shift and the co-registration process of patient and imaging data during neuronavigation have to be considered, but seem to be not unduly large if craniotomies are small and intraoperative ultrasound control is applied.…”

Section: White Matter Imaging By Fiber Trackingmentioning

confidence: 99%

Diffusion Tensor Imaging of Cerebral White Matter*

Stoeter¹,

Dellani²,

Vučurević³

2008

Clin Neuroradiol

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Diffusion tensor imaging (DTI) of the cerebral white matter has proven to be a promising tool with regard to demonstration of developmental changes during childhood and older age and of pathologic alterations by calculation of parameter maps of mean diffusivity (MD) and fractional anisotropy (FA) as well as to image the positions of the major fiber tracts by tractography. After a methodological introduction, the experiences with DTI collected in Mainz, Germany, during the last 5 years are presented. Special emphasis is on preoperative imaging of the corticospinal tract and optic radiation and the computation of FA-based templates (atlases) which can be used for observer-independent evaluation of FA and MD group differences and supra-and infratentorial probabilistic tractography. ZusammenfassungDiffusion Tensor Imaging (DTI) des zerebralen Marklagers hat sich als eine sehr effiziente Methode erwiesen, um die Entwicklung des Marklagers während der Kindheit und seine Regression im Alter sowie pathologische Veränderungen durch die Berechnung der mittleren Diffusivität (MD) und fraktionellen Anisotropie (FA) zu untersuchen. Außerdem können die großen Faserbahnen mittels Traktographie dargestellt werden. Nach einer kurzen Einführung in die Methode werden die Mainzer Erfahrungen dargestellt, die die Autoren in den vergangenen 5 Jahren mit DTI gewonnen haben. Als besondere Schwerpunkte werden dabei die präoperative Darstellung der Pyramidenbahn und der Sehbahn sowie die Konstruktion von FA-und MD-basierten Templates (Atlas) herausgestellt, die eine untersucherunabhängige Auswertung dieser Parameter sowie eine supra-und infratentorielle Traktographie an normalisierten Gruppendatensätzen ermöglichen. Schlüsselwörter: Diffusion Tensor Imaging · Template-Bildung · Fiber Tracking

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Section: White Matter Imaging By Fiber Trackingmentioning

confidence: 99%

Diffusion Tensor Imaging of Cerebral White Matter*

Stoeter¹,

Dellani²,

Vučurević³

2008

Clin Neuroradiol

Self Cite

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White Matter Fiber Tracking Computation Based on Diffusion Tensor Imaging for Clinical Applications

et al. 2006

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Fiber tracking allows the in vivo reconstruction of human brain white matter fiber trajectories based on magnetic resonance diffusion tensor imaging (MR-DTI), but its application in the clinical routine is still in its infancy. In this study, we present a new software for fiber tracking, developed on top of a general-purpose DICOM (digital imaging and communications in medicine) framework, which can be easily integrated into existing picture archiving and communication system (PACS) of radiological institutions. Images combining anatomical information and the localization of different fiber tract trajectories can be encoded and exported in DICOM and Analyze formats, which are valuable resources in the clinical applications of this method. Fiber tracking was implemented based on existing line propagation algorithms, but it includes a heuristic for fiber crossings in the case of disk-shaped diffusion tensors. We successfully performed fiber tracking on MR-DTI data sets from 26 patients with different types of brain lesions affecting the corticospinal tracts. In all cases, the trajectories of the central spinal tract (pyramidal tract) were reconstructed and could be applied at the planning phase of the surgery as well as in intraoperative neuronavigation.

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Intraoperative Neuronavigation von Hirntumoren unter Einschluss des Tractus corticospinalis mit Hilfe von Diffusion Tensor Imaging und Fiber Tracking

Cited by 2 publications

References 40 publications

Diffusion Tensor Imaging of Cerebral White Matter*

Diffusion Tensor Imaging of Cerebral White Matter*

White Matter Fiber Tracking Computation Based on Diffusion Tensor Imaging for Clinical Applications

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