6533b7d4fe1ef96bd126319c
RESEARCH PRODUCT
Micro-circulation of skin blood: optical monitoring by advanced photoplethysmography techniques
Janis SpigulisRenars ErtsUldis Rubinssubject
Materials scienceOptical sensingPhotoplethysmogramBlood volumesense organsComputing systemsBiomedical engineeringdescription
Blood micro-circulation in upper skin layers has been studied experimentally in real time by advanced two-channel photoplethysmography (PPG) techniques. The blood volume changes caused by micro-vessel expansion and dilution during the cardiac cycles have been detected by infrared optical contact sensors. A newly developed portable monitoring device comprising a lap-top computer was used for accumulation and processing of the bio-signals. Shapes of the PPG signals detected at different sites of the body were compared with these obtained by computer modeling.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-04-21 | SPIE Proceedings |