Non-contact and real-time measurement of heart rate and heart rate variability using microwave reflectometry.
A MaseY KogiToru MaruyamaT TokuzawaF SakaiM KunugitaT KoikeH HasegawaPublished in: The Review of scientific instruments (2020)
In this paper, we present noncontact and noninvasive vital signal detection using a microwave reflectometer. Elimination of noise components due to random movement of human subjects has been the biggest issue for microwave measurement. Appropriate filtering, amplitude control of the reflectometer signal, and cross correlation among multiple reflectometers together with new algorithms have enabled motion artifact elimination, signal peak detection, and data processing for various parameters related to heart rate (HR) and heart rate variability (HRV). We focus here on the real time measurements of instantaneous HR and HRV for practical use. The evaluation by microwave reflectometry is completely noninvasive and feasible even through clothing, which is extremely effective for health maintenance in daily life as well as for preventing sudden death related to, for example, coronary heart disease and ventricular arrhythmia.
Keyphrases
- heart rate variability
- heart rate
- blood pressure
- radiofrequency ablation
- loop mediated isothermal amplification
- machine learning
- public health
- healthcare
- heart failure
- physical activity
- deep learning
- label free
- electronic health record
- mental health
- left ventricular
- air pollution
- magnetic resonance imaging
- big data
- computed tomography
- health information
- social media
- atrial fibrillation
- resting state
- sensitive detection
- dual energy