Daniel Baumgarten
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View article: Potential of EEG and EEG/MEG skull conductivity estimation to improve source analysis in presurgical evaluation of epilepsy
Potential of EEG and EEG/MEG skull conductivity estimation to improve source analysis in presurgical evaluation of epilepsy Open
Objective. Conductivity estimation exploiting evoked potentials and fields is a promising method to reduce the uncertainty of electroencephalography (EEG) and combined EEG/magnetoencephalography (MEG) source analysis due to inter-individua…
View article: A scalable implementation of a 3D magnetic Hall sensor card for mapping and monitoring applications
A scalable implementation of a 3D magnetic Hall sensor card for mapping and monitoring applications Open
High-energy physics experiments make use of large magnets to bend particle trajectories and thus allow their identification. These magnets, very often custom-built, necessitate an accurate mapping of the generated magnetic field and, in so…
View article: Monitoring the movement of a bolus of magnetic nanoparticles by magnetorelaxometry imaging
Monitoring the movement of a bolus of magnetic nanoparticles by magnetorelaxometry imaging Open
Objective . Magnetic nanoparticles (MNPs) are an exciting tool in various biomedical applications. In particular, monitoring the movement and distribution of MNPs in body organs, especially in the brain, can help diagnose some life-threate…
View article: Converting Spectral Evoked-to-Background Ratio into Time-Domain Signal-to-Noise Ratio – Validation for High Frequency Oscillations
Converting Spectral Evoked-to-Background Ratio into Time-Domain Signal-to-Noise Ratio – Validation for High Frequency Oscillations Open
N -Interval Fourier Transform Analysis ( N -FTA) allows for spectral separation of an evoked target signal from uncorrelated background activity. It computes the frequency-dependent evoked-to-background ratio (EBR). The developed method al…
View article: Conjunctival Bulbar Redness Extraction Pipeline for High-Resolution Ocular Surface Photography
Conjunctival Bulbar Redness Extraction Pipeline for High-Resolution Ocular Surface Photography Open
To empower clinicians and researchers with a high-throughput workflow by standardized imaging combined with an analysis tool based on artificial intelligence to objectively determine an image-based redness score.
View article: Dual field magnetic separation for improved size fractionation of magnetic nanoparticles
Dual field magnetic separation for improved size fractionation of magnetic nanoparticles Open
A dual-field magnetic separation method that significantly enhances size fractionation of magnetic nanoparticles, compared to conventional gradient-based methods.
View article: Evolutionary optimisation of pixelated IFA inspired antennas
Evolutionary optimisation of pixelated IFA inspired antennas Open
As wireless communication systems increasingly require compact and efficient antennas, conventional antenna design methods are proving difficult to meet the rigorous demands of modern applications. For this purpose, this study introduces a…
View article: Molecular dynamics modelling of interacting magnetic nanoparticles for investigating equilibrium and dynamic ensemble properties
Molecular dynamics modelling of interacting magnetic nanoparticles for investigating equilibrium and dynamic ensemble properties Open
Magnetic nanoparticles have the potential to be used in various biomedical applications, including magnetic drug targeting and hyperthermia for cancer treatment. In both cases, precise prediction of the local particle concentration is requ…
View article: Spectral separation of evoked and spontaneous cortical activity, Part 2: Somatosensory high frequency oscillations
Spectral separation of evoked and spontaneous cortical activity, Part 2: Somatosensory high frequency oscillations Open
N-Interval Fourier Analysis (N-FTA) allows for simultaneous spectral assessment of evoked and spontaneous activity in the frequency domain. We applied this method to signals following peripheral electrical nerve stimulation and performed a…
View article: Transforming Tele-Ophthalmology: Utilizing Cloud Computing for Remote Eye Care
Transforming Tele-Ophthalmology: Utilizing Cloud Computing for Remote Eye Care Open
Background: Tele-ophthalmology is gaining recognition for its role in improving eye care accessibility via cloud-based solutions. The Google Cloud Platform (GCP) Healthcare API enables secure and efficient management of medical image data …
View article: Human head sized magnetorelaxometry imaging of magnetic nanoparticles with optically pumped magnetometers — A feasibility study
Human head sized magnetorelaxometry imaging of magnetic nanoparticles with optically pumped magnetometers — A feasibility study Open
Magnetic nanoparticles (MNP) offer exciting biomedical applications, e.g. magnetic hyperthermia for tumor treatment. The knowledge of the quantitative spatial distribution of MNP in the human body is a key for treatment safety and efficien…
View article: Global sensitivity of EEG source analysis to tissue conductivity uncertainties
Global sensitivity of EEG source analysis to tissue conductivity uncertainties Open
Introduction To reliably solve the EEG inverse problem, accurate EEG forward solutions based on a detailed, individual volume conductor model of the head are essential. A crucial—but often neglected—aspect in generating a volume conductor …
View article: Spectral separation of evoked and spontaneous cortical activity, Part 1: Delta to high gamma band
Spectral separation of evoked and spontaneous cortical activity, Part 1: Delta to high gamma band Open
Spectral analysis of repeatedly evoked potentials (EPs) is challenging since recordings contain a superposition of evoked signals and spontaneous activity. We developed a novel approach, N-interval Fourier Transform Analysis (N-FTA), which…
View article: Online functional connectivity analysis of large all-to-all networks in MNE Scan
Online functional connectivity analysis of large all-to-all networks in MNE Scan Open
The analysis of electroencephalography (EEG)/magnetoencephalography (MEG) functional connectivity has become an important tool in neuroscience. Especially the high time resolution of EEG/MEG enables important insight into the functioning o…
View article: Implementation of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si3.svg"> <mml:mi>N</mml:mi> </mml:math> -Interval fourier transform analysis - Application to compound action potentials
Implementation of -Interval fourier transform analysis - Application to compound action potentials Open
-Interval Fourier Transform Analysis (-FTA) allows for spectral separation of a periodic target signal from uncorrelated background interference. A -FTA pseudo-code is presented. The spectral resolution is defined by the repetition rate of…
View article: Optical Measurement of Ligament Strain: Opportunities and Limitations for Intraoperative Application
Optical Measurement of Ligament Strain: Opportunities and Limitations for Intraoperative Application Open
A feasible and precise method to measure ligament strain during surgical interventions could significantly enhance the quality of ligament reconstructions. However, all existing scientific approaches to measure in vivo ligament strain poss…
View article: Temperature dependent magnetorelaxometry of magnetic nanoparticle ensembles
Temperature dependent magnetorelaxometry of magnetic nanoparticle ensembles Open
Magnetorelaxometry imaging (MRXI) is a non-invasive, quantitative imaging technique for magnetic nanoparticles (MNPs). The image resolution of this technique significantly depends on the relaxation amplitude (Δ B ). For this work, we measu…
View article: Human-sized quantitative imaging of magnetic nanoparticles with nonlinear magnetorelaxometry
Human-sized quantitative imaging of magnetic nanoparticles with nonlinear magnetorelaxometry Open
Objective. Magnetorelaxomety imaging (MRXI) is a noninvasive imaging technique for quantitative detection of magnetic nanoparticles (MNPs). The qualitative and quantitative knowledge of the MNP distribution inside the body is a prerequisit…
View article: Integrating a Novel Eye Imaging System into Clinical Practice: An Open-Source DICOM Simulation Platform
Integrating a Novel Eye Imaging System into Clinical Practice: An Open-Source DICOM Simulation Platform Open
Background: The integration of innovative imaging technologies into clinical workflows requires the utilization of a standardized data exchange format. The “Digital Imaging and Communications in Medicine” (DICOM) standard is widely used in…
View article: Scatter-based common spatial patterns -- a unified spatial filtering framework
Scatter-based common spatial patterns -- a unified spatial filtering framework Open
The common spatial pattern (CSP) approach is known as one of the most popular spatial filtering techniques for EEG classification in motor imagery (MI) based brain-computer interfaces (BCIs). However, it still suffers some drawbacks such a…
View article: Online functional connectivity analysis of large all-to-all networks
Online functional connectivity analysis of large all-to-all networks Open
The analysis of EEG/MEG functional connectivity has become an important tool in neural research. Especially the high time resolution of EEG/MEG enables important insight into the functioning of the human brain. To date, functional connecti…
View article: Predicting prediction: A systematic workflow to analyze factors affecting the classification performance in genomic biomarker discovery
Predicting prediction: A systematic workflow to analyze factors affecting the classification performance in genomic biomarker discovery Open
High throughput technologies in genomics enable the analysis of small alterations in gene expression levels. Patterns of such deviations are an important starting point for the discovery and verification of new biomarker candidates. Identi…
View article: Developing magnetorelaxometry imaging for human applications
Developing magnetorelaxometry imaging for human applications Open
Objective. Magnetic nanoparticles (MNPs) are a promising tool in biomedical applications such as cancer therapy and diagnosis, where localization and quantification of MNP distributions are often mandatory. This can be obtained by magnetor…
View article: Supervised Machine Learning for Predicting Carbohydrate Malabsorptions Using Hydrogen Breath Tests
Supervised Machine Learning for Predicting Carbohydrate Malabsorptions Using Hydrogen Breath Tests Open
Introduction: Carbohydrate malabsorptions symptoms include intestinal fluid retention, causing diarrhea and abdominal distention. The aim of this work is to create a machine learning model that predicts carbohydrate malabsorption using H 2…