ArticleSensors (Basel, Switzerland)2019
A Clinically Evaluated Interferometric Continuous-Wave Radar System for the Contactless Measurement of Human Vital Parameters.
Article in Sensors (Basel, Switzerland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 47 citations in OpenAlex.
- Systematic Literature Review Regarding Heart Rate and Respiratory Rate Measurement by Means of Radar Technology.Sensors (Basel, Switzerland) · 2024Pooled it
- Contactless Technologies, Sensors, and Systems for Cardiac and Respiratory Measurement during Sleep: A Systematic Review.Sensors (Basel, Switzerland) · 2023Pooled it
- A Prototype Distributed Six-Port Reflectometer-Based Transmission-Only Vector Network Analyzer.Sensors (Basel, Switzerland) · 2026Article
- Millimeter-Wave Radar-Based ECG Reconstruction Using Respiratory Harmonic Suppression and CA-WTBNet.Bioengineering (Basel, Switzerland) · 2026Article
- Radar-Based Monitoring: A Proof of Principle Study in a Piglet Model for a Novel Approach in Non-Contact Vital Sign Monitoring.Sensors (Basel, Switzerland) · 2026Article
- Recent Advances and Challenges of Textile-Based Triboelectric Nanogenerators for Smart Healthcare and Sports Applications.Nanomaterials (Basel, Switzerland) · 2026Review
- Development of remote radar based vital sign acquisition for emergency department patient triage.Frontiers in medical technology · 2026Article
- Facing depression: evaluating the efficacy of the EmpkinS-EKSpression reappraisal training augmented with facial expressions - protocol of a randomized controlled trial.BMC psychiatry · 2024Article
- Application of non-contact sensors for health monitoring in hospitals: a narrative review.Frontiers in medicine · 2024Review
- A Review and Tutorial on Machine Learning-Enabled Radar-Based Biomedical Monitoring.IEEE open journal of engineering in medicine and biology · 2024Article
- Evaluating the feasibility and exploring the efficacy of an emotion-based approach-avoidance modification training (eAAMT) in the context of perceived stress in an adult sample - protocol of a parallel randomized controlled pilot study.Pilot and feasibility studies · 2023Article
- Evaluation Protocol for Analogue Intelligent Medical Radars: Towards a Systematic Approach Based on Theory and a State of the Art.Sensors (Basel, Switzerland) · 2023Article
- A new radio-frequency acoustic method for remote study of liquids.Scientific reports · 2021Article
- Classification of Hemodynamics Scenarios from a Public Radar Dataset Using a Deep Learning Approach.Sensors (Basel, Switzerland) · 2021Article
- Contactless analysis of heart rate variability during cold pressor test using radar interferometry and bidirectional LSTM networks.Scientific reports · 2021Article
- Contact-free sensor signals as a new digital biomarker for cardiovascular disease: chances and challenges.European heart journal. Digital health · 2020Review
- Continuous In-Bed Monitoring of Vital Signs Using a Multi Radar Setup for Freely Moving Patients.Sensors (Basel, Switzerland) · 2020Article
- Non-Contact Video-Based Neonatal Respiratory Monitoring.Children (Basel, Switzerland) · 2020Article
- A dataset of clinically recorded radar vital signs with synchronised reference sensor signals.Scientific data · 2020Article
- Cyclostationary-Based Vital Signs Detection Using Microwave Radar at 2.5 GHz.Sensors (Basel, Switzerland) · 2020Article
Corrections and comments
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Authors and funding
11 authors at 2 institutions in 1 country.
Funding
Abstract
Vital parameters are key indicators for the assessment of health. Conventional methods rely on direct contact with the patients' skin and can hence cause discomfort and reduce autonomy. This article presents a bistatic 24 GHz radar system based on an interferometric six-port architecture and features a precision of 1 µm in distance measurements. Placed at a distance of 40 cm in front of the human chest, it detects vibrations containing respiratory movements, pulse waves and heart sounds. For the extraction of the respiration rate, time-domain approaches like autocorrelation, peaksearch and zero crossing rate are compared to the Fourier transform, while template matching and a hidden semi-Markov model are utilized for the detection of the heart rate from sphygmograms and heart sounds. A medical study with 30 healthy volunteers was conducted to collect 5.5 h of data, where impedance cardiogram and electrocardiogram were used as gold standard for synchronously recording respiration and heart rate, respectively. A low root mean square error for the breathing rate (0.828 BrPM) and a high overall F1 score for heartbeat detection (93.14%) could be achieved using the proposed radar system and signal processing.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.