COMPUTER-IMPLEMENTED METHOD FOR SYNCHRONIZING A PHOTOPLETHYSMOGRAPHY (PPG) SIGNAL WITH AN ELECTROCARDIOGRAM (ECG) SIGNAL

A computer-implemented method for synchronizing a PPG signal with an ECG signal comprises:- recording (101, 102) the ECG and PPG signals semi-synchronously;- cutting (103) the PPG signal into PPG signal pieces;- for a PPG signal piece (300):- determining (142-145) distances d between a vector of PPG...

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Bibliographische Detailangaben
Hauptverfasser:	Vanvinckenroye, Amaury Marie-Christine Christophe, Grieten, Lars, Van der Auwera, Jo, Lambein, Xavier Marie Christian Fernand, Leysen, Kobe Roger Marijke, De Witte, Glenn, Van Gorp, Bie Josephus Constantia
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY
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Beschreibung
Zusammenfassung:	A computer-implemented method for synchronizing a PPG signal with an ECG signal comprises:- recording (101, 102) the ECG and PPG signals semi-synchronously;- cutting (103) the PPG signal into PPG signal pieces;- for a PPG signal piece (300):- determining (142-145) distances d between a vector of PPG peak times (301-315) and respective vectors of ECG peak times (351-365) for respective ECG signal pieces (350) obtained by applying different offsets o;- determining (104) a best matching ECG signal piece (350) with minimal distance do; and- registering (105) start time x of the PPG signal piece (300), start time yo of the best matching ECG signal piece (350), and the minimal distance do;- determining an offset and drift between the PPG signal and ECG signal as the offset and slope of a regression model (400) modelling the relation between the start time x and start time yo, inverse weighted by the minimal distance do;- applying the offset and drift to the PPG signal.