IBT Publications by Lenis


Journal Articles (11)

G. Lenis, T. Baas, and O. Dössel.
Ectopic beats and their influence on the morphology of subsequent waves in the electrocardiogram.
In Biomedical Engineering / Biomedizinische Technik, vol. 58(2) , pp. 109-119, 2013
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G. Lenis, T. Heine, P. Reichensperger, T. Beran, O. Dössel, and B. Deml.
Electrocardiographic features for the measurement of drivers' mental workload.
In Applied Ergonomics, vol. 61(May) , pp. 31-43, 2017
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G. Lenis, M. Kircher, J. Lazaro, R. Bailon, E. Gil, and O. Dössel.
Separating the effect of respiration on the heart rate variability using Granger's causality and linear filtering.
In Biomedical Signal Processing and Control, vol. 31, pp. 272-278, 2017
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G. Lenis, N. Pilia, A. Loewe, W. H. W. Schulze, and O. Dössel.
Comparison of Baseline Wander Removal Techniques considering the Preservation of ST Changes in the Ischemic ECG: A Simulation Study.
In Computational and Mathematical Methods in Medicine, vol. 2017(Article ID 9295029) , pp. 13, 2017
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G. Lenis, N. Pilia, T. Oesterlein, A. Luik, C. Schmitt, and O. Dössel.
P wave detection and delineation in the ECG based on the phase free stationary wavelet transform and using intracardiac atrial electrograms as reference.
In Biomedizinische Technik. Biomedical Engineering, vol. 61(1) , pp. 37-56, 2016
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O. Dössel, G. Lenis, A. Loewe, M. Rottmann, G. Seemann, and T. Oesterlein.
Model Assisted Biosignal Analysis of Atrial Electrograms.
In Technisches Messen, vol. 83(2) , pp. 102-111, 2016
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M. Keller, S. Schuler, M. Wilhelms, G. Lenis, G. Seemann, C. Schmitt, O. Dössel, and A. Luik.
Characterization of radiofrequency ablation lesion development based on simulated and measured intracardiac electrograms.
In IEEE Transactions on Biomedical Engineering, vol. 61(9) , pp. 2467-2478, 2014
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T. G. Oesterlein, G. Lenis, D.-T. Rudolph, A. Luik, B. Verma, C. Schmitt, and O. Dössel.
Removing ventricular far-field signals in intracardiac electrograms during stable atrial tachycardia using the periodic component analysis.
In Journal of Electrocardiology, vol. 48(2) , pp. 171-180, 2015
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T. G. Oesterlein, A. Loewe, G. Lenis, A. Luik, C. Schmitt, and O. Doessel.
Automatic Identification of Reentry Mechanisms and Critical Sites during Atrial Tachycardia by Analyzing Areas of Activity..
In IEEE Transactions on Bio-Medical Engineering, 2018
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S. Pollnow, N. Pilia, G. Schwaderlapp, A. Loewe, O. Dössel, and G. Lenis.
An adaptive spatio-temporal Gaussian filter for processing cardiac optical mapping data.
In Computers in Biology and Medicine, 2018
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J. Ramirez, V. Monasterio, A. Minchole, M. Llamedo, G. Lenis, I. Cygankiewicz, A. Bayes de Luna, M. Malik, J. P. Martinez, P. Laguna, and E. Pueyo.
Automatic SVM classification of sudden cardiac death and pump failure death from autonomic and repolarization ECG markers.
In Journal of Electrocardiology, vol. 48(4) , pp. 551-557, 2015
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Conference Contributions (35)

G. Lenis, T. Baas, and O. Dössel.
Rhythmical and morphological features of the ECG following a premature ventricular contraction.
In 46. Jahrestagung der DGBMT im VDE. Proceedings BMT 2012(s1) , 2012
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G. Lenis, T. Baas, and O. Dössel.
Automatic detection and classification of ectopic beats in the ECG using a Support Vector Machine.
In 45. Jahrestagung der DGBMT im VDE. Proceedings BMT 2011, 2011
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G. Lenis, T. Baas, and O. Dössel.
Artefaktdetektion im Elektrokardiogramm, um eine robustere Extrasystolenerkennung und Klassifizierung zu ermöglichen.
In Biosignalverarbeitung und Magnetische Methoden in der Medizin. Proceedings BBS 2012, 2012
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G. Lenis, F. Conz, and O. Dössel.
Combining different ECG derived respiration tracking methods to create an optimal reconstruction of the breathing pattern.
In Current Directions in Biomedical Engineering, vol. 1(1) , pp. 54-57, 2015
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G. Lenis, and O. Dössel.
T wave morphology during heart rate turbulence in patients with chronic heart failure.
In Biomedizinische Technik. Biomedical Engineering, vol. 58(s1) , 2013
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G. Lenis, H. G. Jahnke, and O. Dössel.
An algorithm to analyze extracellular field potentials measured from cardiac myocytes.
In Biosignalverarbeitung und Magnetische Methoden in der Medizin, 2014
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G. Lenis, A. Kramlich, T. Oesterlein, A. Luik, C. Schmitt, and O. Dössel.
Development and Benchmarking of Activity Detection Algorithms for Intracardiac Electrograms Measured During Atrial Flutter.
In Workshop Biosignal 2016. Innovation bei der Erfassung und Analyse bioelektrischer und bimagnetischer Signale, pp. 5-8, 2016
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G. Lenis, Y. Lutz, G. Seeman, A. García-Alberola, J. L. Rojo-Álvarez, O. Barquero-Peréz, E. Gil, and O. Dössel.
Post Extrasystolic T Wave Change in Subjects With Structural Healthy Ventricles Measurement and Simulation.
In Computing in Cardiology, vol. 41, pp. 1069-1072, 2014
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G. Lenis, R. Menges, J. Ramirez, I. Cygankiewicz, A. Bayes de Luna, P. Laguna, and O. Dössel.
Post Extrasystolic T Wave Change to Stratify Risk of Pump Failure Death in Patients with Chronic Heart Failure.
In Computing in Cardiology, 2016
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G. Lenis, T. Oesterlein, and O. Dössel.
Orthogonal component analysis to remove ventricular far field in non periodic sustained atrial flutter.
In Computing in Cardiology, vol. 42, pp. 669-672, 2015
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G. Lenis, P. Reichensperger, D. Sommer, C. Heinze, M. Golz, and O. Dössel.
Detection of microsleep events in a car driving simulation study using electrocardiographic features.
In Current Directions in Biomedical Engineering, vol. 2(1) , pp. 283-287, 2016
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A. A. Ahmad, J. Johnson, G. Lenis, C. Hunter, and F. B. Sachse.
Deconvolution of multispectral confocal microscopic images using measured point spread functions.
In BMES 2016 Annual Meeting, vol. Poster Session(Fri-400) , pp. 186, 2016
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O. Dössel, G. Lenis, A. Loewe, S. Pollnow, M. Rottmann, B. Verma, C. Schmitt, A. Luik, and T. Oesterlein.
Atrial Signals Modeling Meets Biosignal Analysis.
In IFMBE Proceedings, vol. 65, pp. 723-726, 2017
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J. Greiner, T. Oesterlein, G. Lenis, and O. Dössel.
Virtual-Reality Based Visualization of Cardiac Arrhythmias on Mobile Devices.
In Computing in Cardiology, 2016
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J. Greiner, S. Pollnow, S. Schuler, G. Lenis, G. Seemann, and O. Dössel.
Simulation of intracardiac electrograms around acute ablation lesions.
In Current Directions in Biomedical Engineering, vol. 2(1) , pp. 607-610, 2016
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C. Gross, S. Pollnow, O. Dössel, and G. Lenis.
Automatic feature extraction algorithms for the assessment of in-vitro electrical recordings of rat myocardium with ablation lesions.
In Current Directions in Biomedical Engineering, vol. 3(2) , pp. 249-252, 2017
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C. Heinze, C. Hütterer, T. Schnupp, G. Lenis, and M. Golz.
Drowsiness discrimination in an overnight driving simulation on the basis of RR and QT intervals.
2017
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M. Kircher, G. Lenis, and O. Dössel.
Separating the effect of respiration from the Heart Rate Variability for cases of constant harmonic breathing.
In Current Directions in Biomedical Engineering, vol. 1(1) , pp. 46-49, 2015
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M. Kircher, R. Menges, G. Lenis, and O. Dössel.
Respiratory influence on HRV parameters analyzed during controlled respiration, spontaneous respiration and apnoe.
In Current Directions in Biomedical Engineering, vol. 3(2) , 2017
  
A. Loewe, S. Debatin, G. Lenis, and O. Dössel.
Optimal ECG lead systems to maximimze left atrial information content.
In BMTMedPhys 2017, vol. 62(s1 - V73) , pp. 68, 2017
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A. Loewe, S. Debatin, G. Lenis, and O. Dössel.
Maximization of left atrial information through the optimization of ECG lead systems.
In Computing in Cardiology, vol. 44, 2017
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R. Menges, G. Lenis, and O. Dössel.
Choosing the best rhythmical and morphological features for a QRS complex classification algorithm.
In Biomedizinische Technik / Biomedical Engineering, vol. 59(s1) , pp. 185, 2014
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T. Oesterlein, A. Kramlich, G. Lenis, A. Luik, C. Schmitt, and O. Dössel.
Automatic detection and mapping of double potentials in intracardiac electrograms.
In Current Directions in Biomedical Engineering, vol. 2(1) , pp. 179-183, 2016
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T. Oesterlein, G. Lenis, A. Luik, C. Schmitt, and O. Dössel.
Optimized Approach for the Detection of Active Segments in Intracardiac Electrograms Measured during Atrial Flutter.
In 42nd International Congress on Electrocardiology Conference Book of Abstracts, 2015
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T. Oesterlein, G. Lenis, A. Luik, C. Schmitt, and O. Dössel.
Periodic component analysis to eliminate ventricular far field artifacts in unipolar atrial electrograms of patients suffering from atrial flutter.
In Biomedizinische Technik / Biomedical Engineering, vol. 59(s1) , pp. 14, 2014
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T. Oesterlein, G. Lenis, A. Luik, B. Verma, C. Schmitt, and O. Dössel.
Removing ventricular far field artifacts in intracardiac electrograms during stable atrial flutter using the periodic component analysis proof of concept study.
In Proceedings 41th International Congress on Electrocardiology, pp. 49--52, 2014
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T. Oesterlein, A. Loewe, G. Lenis, and O. Dössel.
Statistical assessment of cardiac excitation by morphology-based clustering of local activation waves.
In BMTMedPhys 2017, vol. 62(S1) , pp. S120, 2017
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M. Pfeifer, G. Lenis, and O. Dössel.
A general approach for dynamic modeling of physiological time series.
In Biomedizinische Technik. Biomedical Engineering, vol. 58(s1) , 2013
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N. A. Pilia, G. Lenis, A. Loewe, W. H. W. Schulze, and . O. Dössel.
The impact of baseline wander removal techniques on the ST segment in simulated ischemic 12-lead ECG.
In Current Directions in Biomedical Engineering, vol. 1(1) , pp. 96-99, 2015
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N. Pilia, O. Dössel, G. Lenis, and A. Loewe.
ECG as a Tool to Estimate Potassium and Calcium Concentrations in the Extracellular Space.
In Computing in Cardiology, vol. 44, 2017
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N. Pilia, G. Lenis, and O. Dössel.
Developing a robust method to delineate the P wave using information from intracardiac electrograms.
In Biosignalverarbeitung und Magnetische Methoden in der Medizin. Proceedings BBS 2014, pp. 2, 2013
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N. Pilia, C. Ritter, D. Potyagaylo, W. H. W. Schulze, O. Dössel, and G. Lenis.
Determination of the excitation origin in the ventricles from the ECG using support vector regression.
In Current Directions in Biomedical Engineering, vol. 3(2) , pp. 257-260, 2017
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C. Ritter, G. Lenis, W. H. W. Schulze, D. Potyagaylo, and O. Dössel.
Offset removal methods for the body surface potential map to improve the ECG imaging of ventricular ectopic beats.
In Biosignalverarbeitung und Magnetische Methoden in der Medizin. Proceedings BBS 2016, pp. 1-4, 2016
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G. Schwaderlapp, T. Oesterlein, O. Dössel, A. Luik, C. Schmitt, and G. Lenis.
Definition, estimation and limitations of the dominant frequency in intracardiac electrograms.
In Current Directions in Biomedical Engineering, vol. 3(2) , pp. 95-98, 2017
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E. M. Wülfers, N. S. Torres, G. Lenis, H. Li, G. Seemann, O. Dössel, J. H. B. Bridge, and F. B. Sachse.
An automated approach to analyze microstructural remodeling from confocal microscopies of ventricular myocytes from diseased hearts.
In Biomedizinische Technik / Biomedical Engineering, vol. 57(s1) , pp. 46, 2012
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Dissertations (2)

G. Lenis.
Automatic detection and classification of ectopic beats in the ECG using a Support-Vector-Machine.
Institute of Biomedical Engineering, Karlsruhe Institute of Technology (KIT). Dissertation. 2010
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G. Lenis.
Signal Processing Methods for the Analysis of the Electrocardiogram.
Dissertation. 2017
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Student Theses (1)

G. Lenis.
Analysing rhythmical and morphological ECG properties to detect the influence of ectopic beats.
Institute of Biomedical Engineering, Karlsruhe Institute of Technology (KIT). Diplomarbeit. 2012
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