Pulse oximetry based on photoplethysmography imaging with red and green light : Calibratability and challenges.
Remotely measuring the arterial blood oxygen saturation (SpO2) in visible light (Vis) involves different probing depths, which may compromise calibratibility. This paper assesses the feasibility of calibrating camera-based SpO2 (SpO2,cam) using red and green light. Camera-based photoplethysmographic...
| Publicado en: | Journal of Clinical Monitoring & Computing Vol. 35; no. 1; pp. 123 - 134 |
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| Autores principales: | , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Feb2021
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=148784508&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 148784508 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 13871307 OHC jtl: Journal of Clinical Monitoring & Computing issn: 13871307 maglogo: N pubinfo: dt: Feb2021 vid: 35 iid: 1 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 148784508 148784508 NLM31893325 10.1007/s10877-019-00449-y NLM31893325 148784508 ppf: 123 ppct: 11 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Pulse oximetry based on photoplethysmography imaging with red and green light : Calibratability and challenges. aug: au: Moço, Andreia Verkruysse, Wim affil: Electronic Systems Group, Eindhoven University of Technology, Eindhoven, The Netherlands sug: subj: Oxygen Plethysmography Red Light Green Light Adult Oximetry Adult: 19-44 years ab: Remotely measuring the arterial blood oxygen saturation (SpO2) in visible light (Vis) involves different probing depths, which may compromise calibratibility. This paper assesses the feasibility of calibrating camera-based SpO2 (SpO2,cam) using red and green light. Camera-based photoplethysmographic (PPG) signals were measured at 46 healthy adults at center wavelengths of 580 nm (green), 675 nm (red), and 840 nm (near-infrared; NIR). Subjects had their faces recorded during normoxia and hypoxia and under gradual cooling. SpO2,cam estimates in Vis were based on the normalized ratio of camera-based PPG amplitudes in red over green light (RoG). SpO2,cam in Vis was validated against contact SpO2 (reference) and compared with SpO2,cam estimated using red-NIR wavelengths. An RoG-based calibration curve for SpO2 was determined based on data with a SpO2 range of 85-100%. We found an [Formula: see text] error of 2.9% (higher than the [Formula: see text] for SpO2,cam in red-NIR). Additional measurements on normoxic subjects under temperature cooling (from [Formula: see text] to [Formula: see text]) evidenced a significant bias of - 1.7, CI [- 2.7, - 0.7]%. It was also noted that SpO[Formula: see text] estimated at the cheeks was significantly biased (- 3.6, CI [- 5.7, - 1.5]%) with respect to forehead estimations. Under controlled conditions, SpO[Formula: see text] can be calibrated with red and green light but the accuracy is less than that of SpO[Formula: see text] estimated in the usual red-NIR window. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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