Results 1 to 10 of about 3,611 (155)

On the cardiorespiratory coordination assessed by the photoplethysmography imaging technique [PDF]

open access: yesScientific Reports, 2023
Cardiorespiratory coordination (CRC) probes the interaction between cardiac and respiratory oscillators in which cardiac and respiratory activity are synchronized, with individual heartbeats occurring at approximately the same temporal positions during ...
Stefan Borik   +7 more
doaj   +2 more sources

A Survey of Photoplethysmography and Imaging Photoplethysmography Quality Assessment Methods

open access: yesApplied Sciences, 2022
Photoplethysmography is a method to visualize the variation in blood volume within tissues with light. The signal obtained has been used for the monitoring of patients, interpretation for diagnosis or for extracting other physiological variables (e.g ...
Théo Desquins   +3 more
doaj   +3 more sources

Spatio-temporal and -spectral feature maps in photoplethysmography imaging and infrared thermograph [PDF]

open access: yesBioMedical Engineering OnLine, 2021
Background Only a small fraction of the information available is generally used in the majority of camera-based sensing approaches for vital sign monitoring.
Michael Paul   +5 more
doaj   +2 more sources

A low-cost three-wavelength illumination system for camera-based photoplethysmography imaging [PDF]

open access: yesHardwareX
This paper presents the design and implementation of a low-cost, reliable three-wavelength (3-λ) illumination device intended for photoplethysmography imaging (PPGI) measurements.
Michal Labuda   +3 more
doaj   +2 more sources

Novel Method to Assess Endothelial Function via Monitoring of Perfusion Response to Local Heating by Imaging Photoplethysmography

open access: yesSensors, 2022
Endothelial dysfunction is one of the most important markers of the risk of cardiovascular complications. This study is aimed to demonstrate the feasibility of imaging photoplethysmography to assess microcirculation response to local heating in order to ...
Alexei A. Kamshilin   +7 more
doaj   +3 more sources

Contactless Cardiovascular Assessment by Imaging Photoplethysmography: A Comparison with Wearable Monitoring

open access: yesSensors, 2023
Despite the notable recent developments in the field of remote photoplethysmography (rPPG), extracting a reliable pulse rate variability (PRV) signal still remains a challenge.
Valerie A. A. van Es   +3 more
doaj   +3 more sources

Non-contact alcohol detection in mice using an imaging photoplethysmography (IPPG) system [PDF]

open access: yesScientific Reports
We report on a method to determine whether alcohol has been consumed using camera-based, non-contact imaging photoplethysmography (IPPG) technology. IPPG signals were collected using a visible-band CMOS camera and a 520 nm light-emitting diode (LED). The
Jea Young Choi   +2 more
doaj   +2 more sources

Application of imaging photoplethysmography in surgical procedures: A review article

open access: yesAsian Journal of Surgery
Imaging photoplethysmography (iPPG) is an emerging non-invasive monitoring technology that has gained significant attention in recent years due to its numerous advantages, including safety, simplicity, and cost-effectiveness.
Xuan Qiu   +5 more
doaj   +3 more sources

Assessment of spatiotemporal heterogeneity of two-dimensional images on the example of photoplethysmograpic imaging of hemodynamics [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Физика, 2023
Background and Objectives: The problem of representation of multidimensional data on a two-dimensional plane arises during the processing of a series of two-dimensional images in the spatiotemporal and time-frequency domains.
Sagaidachnyi, Andrey Aleksandrovich   +7 more
doaj   +1 more source

Correlation Mapping of Perfusion Patterns in Cutaneous Tissue

open access: yesApplied Sciences, 2022
Perfusion patterns of cutaneous tissue represent a valuable source of information about the state of the patient’s cardiovascular system and autonomic nervous system (ANS).
Patrik Procka   +3 more
doaj   +1 more source

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