Results 11 to 20 of about 1,748,185 (181)

Assessment of cerebral circulation through an intact skull using imaging photoplethysmography [PDF]

open access: yesНаучно-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   +3 more sources

Feasibility of imaging photoplethysmography [PDF]

open access: yes, 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 ...
Sijung Hu (1250727)   +3 more
core   +8 more sources

Opto-physiological modelling of imaging photoplethysmography [PDF]

open access: yes, 2010
Imaging photoplethysmography (IPPG) is one of the emerging medical imaging modalities to visualise peripheral blood perfusion of a specific tissue. Blood perfusion. defined as the blood volume exchange.
Jia Zheng (140297)
core   +6 more sources

Real-time realizable mobile imaging photoplethysmography

open access: yesScientific Reports, 2022
Photoplethysmography imaging (PPGI) sensors have attracted a significant amount of attention as they enable the remote monitoring of heart rates (HRs) and thus do not require any additional devices to be worn on fingers or wrists.
Hooseok Lee   +5 more
doaj   +1 more source

An iPPG-Based Device for Pervasive Monitoring of Multi-Dimensional Cardiovascular Hemodynamics

open access: yesSensors, 2021
Hemodynamic activities, as an essential measure of physiological and psychological characteristics, can be used for cardiovascular and cerebrovascular disease detection.
Jingjing Luo   +4 more
doaj   +1 more source

Robust Imaging Photoplethysmography in Long-Distance Motion

open access: yesIEEE Photonics Journal, 2020
Imaging photoplethysmography (IPPG) enables contactless physiological parameters monitoring using a regular video camera, which led to an increasing interest in video health monitoring.
LingQin Kong   +6 more
doaj   +1 more source

Modified Allen Test Assessment via Imaging Photoplethysmography

open access: yesCurrent Directions in Biomedical Engineering, 2023
The modified Allen test (MAT) is a widely used tool to examine the perfusion capacities of the arteries (ulnar or radial) of the hand. In clinical practice, MAT is utilized to ensure that in the event of occlusion, remaining vessels guarantee sufficient ...
Kossack Benjamin   +5 more
doaj   +1 more source

Contactless photoplethysmography for assessment of small fiber neuropathy

open access: yesFrontiers 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

Remote Photoplethysmography for Evaluation of Cutaneous Sensory Nerve Fiber Function

open access: yesSensors, 2021
About 2% of the world’s population suffers from small nerve fiber dysfunction, neuropathy, which can result in severe pain. This condition is caused by damage to the small nerve fibers and its assessment is challenging, due to the lack of simple and ...
Zbignevs Marcinkevics   +3 more
doaj   +1 more source

Super-Resolution Convolutional Network for Image Quality Enhancement in Remote Photoplethysmography based Heart Rate Estimation [PDF]

open access: yes, 2022
Heart rate (HR) is one of the important vital parameters of the human body and understanding this vital sign provides key insights into human wellness.
Smera Premkumar, K.   +4 more
core   +1 more source

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