Results 21 to 30 of about 1,748,185 (170)

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

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

Photoplethysmographic imaging of hemodynamics and two-dimensional oximetry [PDF]

open access: yesИзвестия 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

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

Validation of Skin Perfusion Monitoring by Imaging PPG versus Laser Speckle Imaging

open access: yesCurrent 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

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

Intraoperative Imaging of Cortical Blood Flow by Camera-Based Photoplethysmography at Green Light

open access: yesApplied Sciences, 2020
Intraoperative evaluation of blood perfusion in the brain cortex is an important but hitherto unresolved problem. Our aim was to demonstrate the feasibility of cerebral microcirculation assessment during open brain surgery by using camera-based ...
Oleg V. Mamontov   +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

Imaging PPG for In Vivo Human Tissue Perfusion Assessment during Surgery

open access: yesJournal of Imaging, 2022
Surgical excision is the golden standard for treatment of intestinal tumors. In this surgical procedure, inadequate perfusion of the anastomosis can lead to postoperative complications, such as anastomotic leakages.
Marco Lai   +6 more
doaj   +1 more source

Non-Contact, Simple Neonatal Monitoring by Photoplethysmography

open access: yesSensors, 2018
This paper presents non-contact vital sign monitoring in neonates, based on image processing, where a standard color camera captures the plethysmographic signal and the heart and breathing rates are processed and estimated online.
Juan-Carlos Cobos-Torres   +2 more
doaj   +1 more source

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