Results 21 to 30 of about 7,588 (202)
Spatial averaging method based on adaptive weight for imaging photoplethysmography. [PDF]
J Biomed Opt, 2023 Imaging photoplethysmography (iPPG) is a non-contact measuring technology for several physiological parameters reflecting personal health status without a special sensor. However, the pulse signal obtained using the iPPG usually is contaminated by various noises, and the intensity of the interesting pulse signal is relatively weak compared to the ...
Ryu J +5 more
europepmc +3 more sources
Assessment of spatiotemporal heterogeneity of two-dimensional images on the example of photoplethysmograpic imaging of hemodynamics [PDF]
Известия 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
Assessment of cerebral circulation through an intact skull using imaging photoplethysmography [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2021 The feasibility of assessing the parameters of cerebral hemodynamics without skull trepanation using imaging photoplethysmography with illumination in the near-infrared spectrum range was demonstrated for the first time.
Maxim A. Volynsky +6 more
doaj +1 more source
Photoplethysmographic imaging of hemodynamics and two-dimensional oximetry [PDF]
Известия Саратовского университета. Новая серия: Физика, 2022 Background and Objectives: A review of recent papers devoted to actively developing methods of photoplethysmographic imaging (PPGI) of blood volume pulsations in vessels and non-contact two-dimensional oximetry on the surface of the human body is carried
Volkov, Ivan Yu. +2 more
doaj +1 more source
Feasibility of Imaging Photoplethysmography [PDF]
2008 International Conference on BioMedical Engineering and Informatics, 2008 Contact and spot measurement have limited the application of photoplethysmography (PPG), thus an imaging PPG system comprising a digital CMOS camera and three wavelength light-emitting diodes (LEDs) is developed to detect the blood perfusion in tissue.
Jia Zheng +3 more
openaire +1 more source
Cuffless Single-Site Photoplethysmography for Blood Pressure Monitoring [PDF]
, 2020 One in three adults worldwide has hypertension, which is associated with significant morbidity and mortality. Consequently, there is a global demand for continuous and non-invasive blood pressure (BP) measurements that are convenient, easy to use, and ...
Abbott, D. +15 more
core +3 more sources
Contactless photoplethysmography for assessment of small fiber neuropathy
Frontiers in Physiology, 2023 Chronic pain is a prevalent condition affecting approximately one-fifth of the global population, with significant impacts on quality of life and work productivity.
Zbignevs Marcinkevics +6 more
doaj +1 more source
Validation of Skin Perfusion Monitoring by Imaging PPG versus Laser Speckle Imaging
Current Directions in Biomedical Engineering, 2023 Assessment of skin perfusion can reveal signs of deterioration and help to prevent critical states. Commonly applied clinical tests to capture skin perfusion are subjective and often hard to quantify.
Fleischhauer Vincent +2 more
doaj +1 more source
Animal model of assessing cerebrovascular functional reserve by imaging photoplethysmography. [PDF]
Sci Rep, 2020 AbstractAssessment of the cerebral blood-flow-reserve in patients with cerebrovascular diseases is extremely important in terms of making prognosis, determining treatment tactics, and controlling the revascularization outcome in the case of reconstructive interventions on the brain vessels.
Mamontov OV +6 more
europepmc +4 more sources
Imaging Photoplethysmography: Signal Waveform Analysis [PDF]
2019 10th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS), 2019 Imaging photoplethysmography (iPPG) is used to remotely measure the blood volume pulse using a camera. Traditionally, it has been employed to estimate heart and respiratory rates, and recently blood pressure and oxygen saturation. Biomedical engineering researchers have become increasingly interested in iPPG because of its several advantages as comfort,
Djamaleddine Djeldjli +3 more
openaire +1 more source