0000000000383026

AUTHOR

Karlis Prieditis

showing 2 related works from this author

<title>A portable device for optical assessment of the cardiovascular condition</title>

2003

A hand-held prototype device for detection and processing of the tissue-remitted optical signals has been developed and tested. The photoplethysmography (PPG) principle was applied to follow the dilation and contraction of skin blood vessels during the cardiac cycle. Cardiovascular condition of the monitored person was assessed by temporal analysis of the recorded PPG signals as well as by shape analysis of the mean single-period PPG signals.© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Cardiac cycleTissue opticsbusiness.industryPhotoplethysmogramOptical engineeringeducationMedicinesense organsbusinessBiomedical engineeringSPIE Proceedings
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Optical multichannel sensing of skin blood pulsations

2004

Time resolved detection and analysis of the skin back-scattered optical signals (reflection photoplethysmography or PPG) provide information on skin blood volume pulsations and can serve for cardiovascular assessment. The multi-channel PPG concept has been developed and clinically verified in this study. Portable two- and four-channel PPG monitoring devices have been designed for real-time data acquisition and processing. The multi-channel devices were successfully applied for cardiovascular fitness tests and for early detection of arterial occlusions in extremities. The optically measured heartbeat pulse wave propagation made possible to estimate relative arterial resistances for numerous …

Data acquisitionPulse wave propagationArterial occlusionsHeartbeatbusiness.industryPhotoplethysmogramHealthy volunteersMedicineEarly detectionBlood volumesense organsbusinessBiomedical engineeringSPIE Proceedings
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