Comparison of methods for determining pulse arrival time from Doppler and photoplethysmography signals.
Annu Int Conf IEEE Eng Med Biol Soc
; 2014: 3809-12, 2014.
Article
de En
| MEDLINE
| ID: mdl-25570821
ABSTRACT
The aim of this study was to compare three foot-finding methods applied to ultrasound Doppler and photoplethysmographic (PPG) signals maximum 1st derivative, maximum 2nd derivative and an 'intersecting tangents' method. The pulse arrival times of each method were compared. Also the precision of each method was evaluated by comparing instantaneous cardiac periods derived using each method from simultaneous Doppler and PPG with a reference measurement the R-R interval calculated from a simultaneously recorded ECG. The results show that the maximum 1st derivative method produced significantly larger pulse arrival times than the other two methods. The intersecting tangents method produced greatest precision for cardiac periods compared with ECG than maximum 1st or 2nd derivatives for both Doppler (r(2) = 0.975) and PPG (r(2) = 0.987) signals.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Traitement du signal assisté par ordinateur
/
Photopléthysmographie
/
Échographie-doppler
Limites:
Adult
/
Female
/
Humans
/
Male
Langue:
En
Journal:
Annu Int Conf IEEE Eng Med Biol Soc
Année:
2014
Type de document:
Article