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Neuroradiology

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01-09-2015 | Diagnostic Neuroradiology

Evaluation of electrode position in deep brain stimulation by image fusion (MRI and CT)

Authors: I. Barnaure, P. Pollak, S. Momjian, J. Horvath, K. O. Lovblad, C. Boëx, J. Remuinan, P. Burkhard, M. I. Vargas

Published in: Neuroradiology | Issue 9/2015

Abstract

Introduction

Imaging has an essential role in the evaluation of correct positioning of electrodes implanted for deep brain stimulation (DBS). Although MRI offers superior anatomic visualization of target sites, there are safety concerns in patients with implanted material; imaging guidelines are inconsistent and vary. The fusion of postoperative CT with preoperative MRI images can be an alternative for the assessment of electrode positioning. The purpose of this study was to assess the accuracy of measurements realized on fused images (acquired without a stereotactic frame) using a manufacturer-provided software.

Methods

Data from 23 Parkinson’s disease patients who underwent bilateral electrode placement for subthalamic nucleus (STN) DBS were acquired. Preoperative high-resolution T2-weighted sequences at 3 T, and postoperative CT series were fused using a commercially available software. Electrode tip position was measured on the obtained images in three directions (in relation to the midline, the AC-PC line and an AC-PC line orthogonal, respectively) and assessed in relation to measures realized on postoperative 3D T1 images acquired at 1.5 T.

Results

Mean differences between measures carried out on fused images and on postoperative MRI lay between 0.17 and 0.97 mm.

Conclusion

Fusion of CT and MRI images provides a safe and fast technique for postoperative assessment of electrode position in DBS.

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Title: Evaluation of electrode position in deep brain stimulation by image fusion (MRI and CT)
Authors: I. Barnaure
P. Pollak
S. Momjian
J. Horvath
K. O. Lovblad
C. Boëx
J. Remuinan
P. Burkhard
M. I. Vargas
Publication date: 01-09-2015
Publisher: Springer Berlin Heidelberg
Published in: Neuroradiology / Issue 9/2015
Print ISSN: 0028-3940
Electronic ISSN: 1432-1920
DOI: https://doi.org/10.1007/s00234-015-1547-z

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Evaluation of electrode position in deep brain stimulation by image fusion (MRI and CT)

Abstract

Introduction

Methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Introduction

Methods

Results

Conclusion

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