A5011937004- Neurological disorders and treatments
- EEG and Brain-Computer Interfaces
- Functional Brain Connectivity Studies
- Advanced MRI Techniques and Applications
- Neuroscience and Neural Engineering
- Transcranial Magnetic Stimulation Studies
- Magnetic Field Sensors Techniques
- Electrical and Bioimpedance Tomography
- Epilepsy research and treatment
- Atomic and Subatomic Physics Research
- Wireless Body Area Networks
Kiel University
2019-2024
University Hospital Schleswig-Holstein
2019
University of Lübeck
2019
Current approaches to detect the positions and orientations of directional deep brain stimulation (DBS) electrodes rely on radiative imaging data. In this study, we aim present an improved version a radiation-free method for magnetic detection position orientation (MaDoPO) based series magnetoencephalography (MEG) measurements possible future solution optimized results using emerging on-scalp MEG systems. A DBS system was positioned into realistic head-torso phantom placed in scanner. total...
The aim of this study is to localize the electrode deep brain stimulation with three dimensional magnetic field measurements by applying dipole fitting approach. was positioned successively at five increasing depths well-known positions in a cylindrical head phantom and distribution measured fluxgate magnetometer around phantom. At each measuring point, total rotating sensor all orthogonal directions. Finite element method used model volume conduction its exact dimensions electromagnetic...
Objective.The aim of the present study was to investigate accuracy localization and rotational orientation detection a directional deep brain stimulation (DBS) electrode using state-of-the-art magnetoencephalography (MEG) scanner.Approach.A DBS along with its stimulator integrated into head phantom placed inside MEG sensor array. The comprised six two omnidirectional contacts. Measurements were performed while stimulating different contacts parameters in phantom. Finite element modeling...
The aim of this article is to analyze the magnetic field properties for both monopolar and bipolar electrode configurations deep-brain stimulation electrodes using 3-D measurements investigate if enable a localization as proof concept. Therefore, simplified head phantom with an integrated was created measure flux densities in all three dimensions fluxgate magnetometer over sensor trajectory measuring points inside magnetically shielded chamber. magnitude density nT pT ranges frequency 160...
Correct position and orientation of a directional deep brain stimulation (DBS) electrode in the patient’s must be known to fully exploit its benefit guiding programming. Magnetoelectric (ME) sensors can play critical role here. The aim this study was determine minimum required limit detection (LOD) ME sensor that used for application by measuring magnetic field induced DBS. For experiment, commercial DBS system integrated into head phantom placed inside state-of-the-art Superconducting...
Objective.The aim of the present study was to evaluate effect different electrode configurations on accuracy determining rotational orientation directional deep brain stimulation (DBS) with our previously published magnetoencephalography (MEG)-based method.Approach.A DBS electrode, along its implantable pulse generator, integrated into a head phantom and placed within MEG sensor array. Predefined bipolar configurations, based activation omnidirectional contacts were set generate defined...
Motivation: MRI of neurostimulators is severely constrained due to RF safety concerns. Goal(s): Demonstrate that built-in sensors in commercial devices, such as a deep brain stimulator, can provide all necessary information detect and improve safety. Approach: We investigated utilized impedance measurements two DBS systems for the detection mitigation RF-induced currents on electrodes lead. Results: Impedance were correlated at various power levels. Temperature rise tip could be reduced 0.02...
Head movements during magnetoencephalography (MEG) recordings lead to a smearing of the magnetic field distribution measured by MEG sensors and thus significant degradation spatial accuracy. This in turn is associated with inaccurate source localization. movement detection was applied performed under condition different degrees head (moderate, weak, quasi-no) compared individually constructed head-cast recordings. The center moved on average around 4.8 mm for moderate motion 3.5 weak motion....