Steffen Leonhardt

A model for intracranial hydrodynamics.

In-ear heart rate monitoring using a micro-optic reflective sensor.

Optimal electrode placement and frequency range selection for the detection of lung water using bioimpedance spectroscopy.

Multichannel simultaneous magnetic induction measurement system (MUSIMITOS).

A system for assessing motion artifacts in the signal of a micro-optic in-ear vital signs sensor.

Lung volume calculated from electrical impedance tomography in ICU patients at different PEEP levels.

In-ear vital signs monitoring using a novel microoptic reflective sensor.

Breathing detection with a portable impedance measurement system: first measurements.

A novel bioimpedance technique to monitor fluid volume state during hemodialysis treatment.

Model-based correction of the influence of body position on continuous segmental and hand-to-foot bioimpedance measurements.

Transmission infrared spectroscopy of whole blood--complications for quantitative analysis from leucocyte adhesion during continuous monitoring.

Bedside measurement of changes in lung impedance to monitor alveolar ventilation in dependent and non-dependent parts by electrical impedance tomography during a positive end-expiratory pressure trial in mechanically ventilated intensive care unit patients.

A capacitive ECG array with visual patient feedback.

A physiological model for extracorporeal oxygenation controller design.

Applying machine learning to detect individual heart beats in ballistocardiograms.

Triboelectricity in capacitive biopotential measurements.

Adaptive beat-to-beat heart rate estimation in ballistocardiograms.

ECG on the road: robust and unobtrusive estimation of heart rate.

Hydrostatic fluid pressure in the vestibular organ of the guinea pig.

Electric impedance tomography for monitoring volume and size of the urinary bladder.

Neonatal non-contact respiratory monitoring based on real-time infrared thermography.

Development of a device for measuring the sensitivity area of coil arrays for magnetic induction measurements.

A portable magnetic induction measurement system (PIMS).

Advances in reflective oxygen saturation monitoring with a novel in-ear sensor system: results of a human hypoxia study.

Electrical impedance tomography: the holy grail of ventilation and perfusion monitoring?

Evaluation of a 433 MHz band body sensor network for biomedical applications.

Electrical Impedance Tomography for hemodynamic monitoring.

A full digital magnetic induction measurement device for non-contact vital parameter monitoring (MONTOS).

Magnetic induction measurements with a six channel coil array for vital parameter monitoring.

A neonatal thorax phantom for contact-less magnetic induction vitalparameter monitoring.

Non-contact monitoring techniques - Principles and applications.

Case study of relevant pressures for an implanted hydrocephalus valve in everyday life.

Multi-channel optical sensor-array for measuring ballistocardiograms and respiratory activity in bed.

Infrared thermography for detailed registration of thermoregulation in premature infants.

Noncontact monitoring of cardiorespiratory activity by electromagnetic coupling.

A multisensor implant for continuous monitoring of intracranial pressure dynamics.

A mathematical model for carbon dioxide elimination: an insight for tuning mechanical ventilation.

A survey on robotic devices for upper limb rehabilitation.

The MAIN Shirt: a textile-integrated magnetic induction sensor array.

Intelligent neonatal monitoring based on a virtual thermal sensor.

Contact-free monitoring of circulation and perfusion dynamics based on the analysis of thermal imagery.

Recent advances in and limitations of cardiac output monitoring by means of electrical impedance tomography.

Usefulness of bioimpedance spectroscopy for detection of hypotensive episode during dialysis.

The IMPACT shirt: textile integrated and portable impedance cardiography.

Bioelectrical impedance spectroscopy as a fluid management system in heart failure.

Influence of physiological sources on the impedance cardiogram analyzed using 4D FEM simulations.

Automatic protective ventilation using the ARDSNet protocol with the additional monitoring of electrical impedance tomography.

Development of a wearable multi-frequency impedance cardiography device.

Feasibility of bioelectrical impedance spectroscopy measurement before and after thoracentesis.

A shape-based quality evaluation and reconstruction method for electrical impedance tomography.

UnoViS: the MedIT public unobtrusive vital signs database.

Detection of heart beats in multimodal data: a robust beat-to-beat interval estimation approach.

Heartbeat Cycle Length Detection by a Ballistocardiographic Sensor in Atrial Fibrillation and Sinus Rhythm.

Beat-to-beat heart rate estimation fusing multimodal video and sensor data.

Modeling a healthy and a person with heart failure conditions using the object-oriented modeling environment Dymola.

Multi-sensor calibration of low-cost magnetic, angular rate and gravity systems.

Remote monitoring of breathing dynamics using infrared thermography.

RheoStim: Development of an Adaptive Multi-Sensor to Prevent Venous Stasis.

Evaluating Innovative In-Ear Pulse Oximetry for Unobtrusive Cardiovascular and Pulmonary Monitoring During Sleep.

Reducing false alarms in the ICU by quantifying self-similarity of multimodal biosignals.

System Description and First Application of an FPGA-Based Simultaneous Multi-Frequency Electrical Impedance Tomography.

Active and Passive Optical Imaging Modality for Unobtrusive Cardiorespiratory Monitoring and Facial Expression Assessment.

Chest electrical impedance tomography examination, data analysis, terminology, clinical use and recommendations: consensus statement of the TRanslational EIT developmeNt stuDy group.

Online cardiac output estimation during transvalvular left ventricular assistance.

Estimation of breathing rate in thermal imaging videos: a pilot study on healthy human subjects.

Improved electrode positions for local impedance measurements in the lung-a simulation study.

Thermoregulation in premature infants: A mathematical model.

Optimizing PEEP by Electrical Impedance Tomography in a Porcine Animal Model of ARDS.

Linearity of electrical impedance tomography during maximum effort breathing and forced expiration maneuvers.

Benefits of object-oriented models and ModeliChart: modern tools and methods for the interdisciplinary research on smart biomedical technology.

Physiological closed-loop control of mechanical ventilation and extracorporeal membrane oxygenation.

Decentralized safety concept for closed-loop controlled intensive care.

Model-Based Estimation of Ankle Joint Stiffness.

Smart bioimpedance-controlled craniotomy: Concept and first experiments.

Smart life support reloaded: design and control of complex therapeutic devices.

Monitoring lung contusion in a porcine polytrauma model using EIT: an application study.

Closed-loop mechanical ventilation for lung injury: a novel physiological-feedback mode following the principles of the open lung concept.

Assessing regional lung mechanics by combining electrical impedance tomography and forced oscillation technique.

Motion Artifact Quantification and Sensor Fusion for Unobtrusive Health Monitoring.

Flow-volume loops measured with electrical impedance tomography in pediatric patients with asthma.

Addition of internal electrodes is beneficial for focused bioimpedance measurements in the lung.

Lung pathologies analyzed with multi-frequency electrical impedance tomography: Pilot animal study.

An object-oriented computational model to study cardiopulmonary hemodynamic interactions in humans.

Monitoring of Cardiorespiratory Signals Using Thermal Imaging: A Pilot Study on Healthy Human Subjects.

Estimating Respiratory Rate in Post-Anesthesia Care Unit Patients Using Infrared Thermography: An Observational Study.

Regional lung ventilation and perfusion by electrical impedance tomography compared to single-photon emission computed tomography.

Evaluation of a new non-invasive measurement technique based on bioimpedance spectroscopy to estimate blood alcohol content: a pilot study.

Evaluation of electrical impedance tomography for determination of urinary bladder volume: comparison with standard ultrasound methods in healthy volunteers.

Unobtrusive Vital Sign Monitoring in Automotive Environments-A Review.

Noninvasive Monitoring of Blood Glucose Using Color-Coded Photoplethysmographic Images of the Illuminated Fingertip Within the Visible and Near-Infrared Range: Opportunities and Questions.

Non-invasive monitoring of blood glucose using optical methods for skin spectroscopy-opportunities and recent advances.

Active Impedance Control of Bioinspired Motion Robotic Manipulators: An Overview.

Reconstruction algorithm for frequency-differential EIT using absolute values.

Enhanced in vitro model of the CSF dynamics.

A Modified Method to Assess Tidal Recruitment by Electrical Impedance Tomography.

Non-invasive evaluation of coronary heart disease in patients with chronic kidney disease using photoplethysmography.

A Broader Look: Camera-Based Vital Sign Estimation across the Spectrum.

Object-oriented modeling of thoracic fluid balance to study cardiogenic pulmonary congestion in humans.

Modeling photoplethysmographic signals in camera-based perfusion measurements: optoelectronic skin phantom.

Comparison of two experimental ARDS models in pigs using electrical impedance tomography.

Individualized Positive End-expiratory Pressure and Regional Gas Exchange in Porcine Lung Injury.

Segmental Bioelectrical Impedance Spectroscopy to Monitor Fluid Status in Heart Failure.

The dawn of physiological closed-loop ventilation-a review.

Fast body part segmentation and tracking of neonatal video data using deep learning.

Car Seats with Capacitive ECG Electrodes Can Detect Cardiac Pacemaker Spikes.

Spatio-temporal and -spectral feature maps in photoplethysmography imaging and infrared thermograph.

Evaluation and Application of a Customizable Wireless Platform: A Body Sensor Network for Unobtrusive Gait Analysis in Everyday Life.

Monitoring transcellular fluid shifts during episodes of intradialytic hypotension using bioimpedance spectroscopy.

Knee-to-knee Bioimpedance Measurements to Monitor Changes in Extracellular Fluid in Haemodynamic-unstable Patients During Dialysis.

and Conductivity Models of the Left Heart Ventricle.

Three-dimensional Pulmonary Monitoring Using Focused Electrical Impedance Measurements.

A Deep Learning-Based Camera Approach for Vital Sign Monitoring Using Thermography Images for ICU Patients.

Classification of chronic venous diseases based on skin temperature patterns.