Paper Info
Title
Investigation of photoplethysmography and near infrared spectroscopy for the assessment of tissue blood perfusion.
Abstract
Pulse Oximetry (PO) and Near Infrared Spectroscopy (NIRS) are among the most widely adopted optical techniques for the assessment of tissue perfusion. PO estimates arterial oxygen saturation (SpO2) by exploiting light attenuations due to pulsatile arterial blood (AC) and constant absorbers (DC) at two different wavelengths. NIRS processes the attenuations of at least two wavelengths to calculate concentrations of Deoxygenated ([HHb]), Oxygenated ([HbO2]), Total Haemoglobin ([tHb]) and Tissue Oxygenation Index (TOI). In this work we present the development and evaluation of a reflectance PPG probe and processing system for the assessment of tissue perfusion. The system adopts both Pulse Oximetry and NIRS principles to calculate SpO2, [HHb], and [HbO2] and [tHb]. The system has been evaluated on the forearm of 10 healthy volunteers during cuff-induced vascular occlusions. The presented system was able to estimate SpO2, [HHb], [HbO2] and [tHb], showing good agreement with state-of-the-art NIRS and conventional PO.
Year
DOI
Venue
2014
10.1109/EMBC.2014.6944837
EMBC
Keywords
DocType
Volume
oximetry,photoplethysmography,near infrared spectroscopy,biomedical optical imaging,constant absorber,pulsatile arterial blood,haemorheology,nirs,arterial oxygen saturation,light attenuation,cuff-induced vascular occlusion,infrared spectroscopy,biological tissues,pulse oximetry,tissue blood perfusion assessment,optical technique,blood
Conference
2014
ISSN
Citations 
PageRank 
1557-170X
0
0.34
References 
Authors
0
2
Name
Order
Citations
PageRank
Tomas Ysehak Abay161.25
P A Kyriacou22016.60