Results 21 to 30 of about 1,744,925 (114)

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

Noncontact imaging photoplethysmography to effectively access pulse rate variability [PDF]

open access: yes, 2013
Noncontact imaging photoplethysmography (PPG) can provide physiological assessment at various anatomical locations with no discomfort to the patient. However, most previous imaging PPG (iPPG) systems have been limited by a low sample frequency, which ...
Sijung Hu (1250727)   +4 more
core   +7 more sources

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

Evaluation of a non-contact Photo-Plethysmographic Imaging (iPPG) system for peripheral arterial disease assessment

open access: yes, 2021
Peripheral Artery Diseases (PAD) are caused by the occlusions of arteries in the peripheral locations of the circulatory system. The severity of PAD is usually assessed using the Ankle Brachial Index (ABI) and the Ultrasound Doppler.
Shulepov, Sergei (author)   +10 more
core   +3 more sources

The Value of High‐Resolution Ultrasound Combined with Shear‐Wave Elastography under Artificial Intelligence Algorithm in Quantitative Evaluation of Skin Thickness in Localized Scleroderma

open access: yesComputational Intelligence and Neuroscience, Volume 2022, Issue 1, 2022., 2022
The aim of this study was to explore the value of high‐resolution ultrasound combined with shear‐wave elastography (SWE) in measuring skin thickness in patients with localized scleroderma (LS). Fifty patients with LS diagnosed by pathology in the hospital were selected as the research object, with a total of 96 lesions. Healthy people (50 cases) in the
Kun Jia   +5 more
wiley   +1 more source

Imaging Photoplethysmography for Noninvasive Anastomotic Perfusion Assessment in Intestinal Surgery [PDF]

open access: yes, 2023
Introduction: Anastomotic leakage after gastrointestinal surgery has a high impact on patient's quality of life and its origin is associated with inadequate perfusion.
van der Stel, Stefan D. (author)   +19 more
core   +1 more source

Contact-Free Optical Assessment of Changes in the Chest Wall Perfusion after Coronary Artery Bypass Grafting by Imaging Photoplethysmography

open access: yesApplied Sciences, 2020
Imaging photoplethysmography (iPPG) is a contact-free monitoring of the cutaneous blood volume pulse by RGB (red-green-blue) cameras. It detects vital parameters from skin areas and is associated to cutaneous perfusion. This study investigated the use of
Imre Kukel   +6 more
doaj   +1 more source

A Survey on Deepfake Video Detection

open access: yesIET Biometrics, Volume 10, Issue 6, Page 607-624, November 2021., 2021
Abstract Recently, deepfake videos, generated by deep learning algorithms, have attracted widespread attention. Deepfake technology can be used to perform face manipulation with high realism. So far, there have been a large amount of deepfake videos circulating on the Internet, most of which target at celebrities or politicians.
Peipeng Yu   +3 more
wiley   +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 photoplethysmography: towards effective physiological measurements [PDF]

open access: yes, 2011
Since its conception decades ago, Photoplethysmography (PPG) the non-invasive opto-electronic technique that measures arterial pulsations in-vivo has proven its worth by achieving and maintaining its rank as a compulsory standard of patient ...
Yu Sun (18463)
core   +6 more sources

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