Noncontact Monitoring Breathing Pattern, Exhalation Flow Rate and Pulse Transit Time
| Autor: | Chenbin Liu, Yuting Yang, Francis Tsow, Nongjian Tao, Dangdang Shao, Hui Yu |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Adult
Male Heartbeat Respiratory rate Biomedical Engineering Pulse Wave Analysis Young Adult Heart Rate Region of interest Photoplethysmogram Humans Medicine Photoplethysmography Monitoring Physiologic Pulse (signal processing) business.industry Exhalation Signal Processing Computer-Assisted Body movement Telemedicine Remote Sensing Technology Breathing Female business Algorithms Biomedical engineering |
| Zdroj: | IEEE Transactions on Biomedical Engineering. 61:2760-2767 |
| ISSN: | 1558-2531 0018-9294 |
| DOI: | 10.1109/tbme.2014.2327024 |
| Popis: | We present optical imaging-based methods to measure vital physiological signals, including breathing frequency (BF), exhalation flow rate, heart rate (HR), and pulse transit time (PTT). The breathing pattern tracking was based on the detection of body movement associated with breathing using a differential signal processing approach. A motion-tracking algorithm was implemented to correct random body movements that were unrelated to breathing. The heartbeat pattern was obtained from the color change in selected region of interest (ROI) near the subject's mouth, and the PTT was determined by analyzing pulse patterns at different body parts of the subject. The measured BF, exhaled volume flow rate and HR are consistent with those measured simultaneously with reference technologies (r = 0.98, for HR; r = 0.93, for breathing rate), and the measured PTT difference (30-40 ms between mouth and palm) is comparable to the results obtained with other techniques in the literature. The imaging-based methods are suitable for tracking vital physiological parameters under free-living condition and this is the first demonstration of using noncontact method to obtain PTT difference and exhalation flow rate. |
| Databáze: | OpenAIRE |
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