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Journal of Medical Imaging

Image-guided preoperative prediction of pyramidal tract side effect in deep brain stimulation: proof of concept and application to the pyramidal tract side effect induced by pallidal stimulation
Author(s): Clement Baumgarten; Yulong Zhao; Paul Sauleau; Cecile Malrain; Pierre Jannin; Claire Haegelen
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Paper Abstract

Deep brain stimulation of the medial globus pallidus (GPm) is a surgical procedure for treating patients suffering from Parkinson’s disease. Its therapeutic effect may be limited by the presence of pyramidal tract side effect (PTSE). PTSE is a contraction time-locked to the stimulation when the current spreading reaches the motor fibers of the pyramidal tract within the internal capsule. The objective of the study was to propose a preoperative predictive model of PTSE. A machine learning-based method called PyMAN (PTSE model based on artificial neural network) accounting for the current used in stimulation, the three-dimensional electrode coordinates and the angle of the trajectory, was designed to predict the occurrence of PTSE. Ten patients implanted in the GPm have been tested by a clinician to create a labeled dataset of the stimulation parameters that trigger PTSE. The kappa index value between the data predicted by PyMAN and the labeled data was 0.78. Further evaluation studies are desirable to confirm whether PyMAN could be a reliable tool for assisting the surgeon to prevent PTSE during the preoperative planning.

Paper Details

Date Published: 30 June 2016
PDF: 8 pages
J. Med. Img. 3(2) 025001 doi: 10.1117/1.JMI.3.2.025001
Published in: Journal of Medical Imaging Volume 3, Issue 2
Show Author Affiliations
Clement Baumgarten, French Institute of Health and Medical Research (France)
Univ. de Rennes 1 (France)
Yulong Zhao, French Institute of Health and Medical Research (France)
Univ. de Rennes 1 (France)
Paul Sauleau, Ctr. Hospitalier Univ. de Rennes (France)
Cecile Malrain, Ctr. Hospitalier Univ. de Rennes (France)
Pierre Jannin, French Institute of Health and Medical Research (France)
Univ. de Rennes 1 (France)
Claire Haegelen, French Institute of Health and Medical Research (France)
Univ. of Rennes 1 (France)
Ctr. Hospitalier Univ. de Rennes (France)


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