Results 61 to 70 of about 25,281 (243)

Comparison of methods for determining pulse arrival time from Doppler and photoplethysmography signals [PDF]

, 2014
The aim of this study was to compare three foot-finding methods applied to ultrasound Doppler and photoplethysmographic (PPG) signals: maximum 1st derivative, maximum 2nd derivative and an 'intersecting tangents' method.
Kyriacou, P. A., Phillips, J. P.
core   +1 more source

Cardiac Arrhythmia Classification Using Photoplethysmography Database

Scientific Reports, 2023
Abstract Worldwide, Cardiovascular Diseases (CVDs) are the leading cause of death. Patients at high cardiovascular risk require long-term follow-up for early CVDs detection. Cardiac arrhythmia detection through the electrocardiogram (ECG) signal has been the basis of many studies.
Qasem Qananwah, Marwa Ababneh, Ahmad Dagamseh   +2 more
openaire   +3 more sources

Vascular dysfunction in women with recurrent pregnancy loss: Possible association with antiphospholipid antibodies

International Journal of Gynecology &Obstetrics, Volume 169, Issue 1, Page 206-214, April 2025.
Abstract Objective Antiphospholipid antibodies (aPL) are recognized to have a pivotal role in recurrent pregnancy loss (RPL) and cardiovascular disease. Therefore, we assessed the vascular function of women with RPL and examined the association with each type of aPL.
Titi Yang, Emi Okada, Maho Todoroki, Siyu Liu, Rukmali Athurupana, Kumie Kataoka, Chiaki Kashino, Takashi Mitsui, Toru Hasegawa, Yasuhiko Kamada, Hisashi Masuyama, Mikiya Nakatsuka   +11 more
wiley   +1 more source

The effects of optical sensor-tissue separation in endocavitary photoplethysmography [PDF]

, 2018
Objective: Intestinal anastomotic failure that occurs mainly due to ischaemia is a serious risk in colorectal cancer patients undergoing surgery. Surgeons continue to rely on subjective methods such as visual inspection to assess intestinal viability ...
Kyriacou, P. A., Patel, Z., Thaha, M. A.
core   +3 more sources

Photoplethysmography in Normal and Pathological Sleep

Sensors, 2021
This article presents an overview of the advancements that have been made in the use of photoplethysmography (PPG) for unobtrusive sleep studies. PPG is included in the quickly evolving and very popular landscape of wearables but has specific interesting properties, particularly the ability to capture the modulation of the autonomic nervous system ...
Ramona S. Vulcan, Stephanie André, Marie Bruyneel   +2 more
openaire   +4 more sources

Recent advances in organic broad‐spectrum photodetection materials and devices

InfoMat, EarlyView.
Graphical Abstract This review systematically outlines the evolution of organic photodetectors from fullerene‐based to advanced non‐fullerene acceptors, highlighting how molecular engineering (e.g., D–A, quinoidal, and A‐D‐A′‐D‐A architectures) extends spectral response into the short‐wave infrared region.
Yilin Zhao, Shijia Tan, Deyang Ji, Wenping Hu   +3 more
wiley   +1 more source

Monitoring of the central blood pressure waveform via a conformal ultrasonic device. [PDF]

, 2018
Continuous monitoring of the central-blood-pressure waveform from deeply embedded vessels, such as the carotid artery and jugular vein, has clinical value for the prediction of all-cause cardiovascular mortality. However, existing non-invasive approaches,
Bhaskaran, Shubha, Chen, Yimu, Chen, Zeyu, Gong, Hua, Gu, Yue, Guo, Yuxuan, Hu, Hongjie, Huang, Brady, Huang, Zhenlong, Lei, Yusheng, Li, Xiaoshi, Li, Yang, Lin, Muyang, Makihata, Mitsutoshi, Pisano, Albert P, Wang, Chonghe, Wang, Chunfeng, Xu, Sheng, Yin, Zhenan, Zhang, Liangfang, Zhang, Lin, Zhang, Tianjiao, Zhang, Zhuorui, Zhou, Qifa   +23 more
core   +1 more source

Reflectance Photoplethysmography as Non-Invasive Monitoring of Tissue Blood Perfusion. [PDF]

, 2015
In the last decades Photoplethysmography (PPG) has been used as noninvasive technique for monitoring arterial oxygen saturation by Pulse Oximetry (PO), whereas Near Infrared Spectroscopy (NIRS) has been employed for monitoring tissue blood perfusion ...
Abay, T., Kyriacou, P. A.
core   +1 more source

Advancements in Remote Photoplethysmography

Electronics
Advancements in camera technology over the past two decades have made image-based monitoring increasingly accessible for healthcare applications. Imaging photoplethysmography (iPPG) and remote photoplethysmography (rPPG) are non-invasive methods for measuring vital signs, such as heart rate, respiratory rate, oxygen saturation, and blood pressure ...
Saikevičius, Linas, Raudonis, Vidas, Kozlovskaja - Gumbriene, Agne, Šakalytė, Gintarė   +3 more
openaire   +1 more source

CardiacDP: An R package for rapid automated cardiac data processing, integrating autocorrelation, a genetic algorithm, and a tracking index

Limnology and Oceanography: Methods, EarlyView.
Abstract Heart rate is a popular proxy of physiological responses, but the highly complex and variable cardiac data obtained from organisms such as marine invertebrates pose a major challenge to efficient and accurate data processing. To address this, we developed a novel, integrative algorithm for rapid and automated cardiac data processing.
Sarah L. Y. Lau, Adrian T. C. Wong, Yi‐Fei Gu, Tin Yan Hui   +3 more
wiley   +1 more source