Results 21 to 30 of about 1,871 (134)

Monte Carlo Analysis of Optical Interactions in Reflectance and Transmittance Finger Photoplethysmography [PDF]

, 2019
Photoplethysmography (PPG) is a non-invasive photometric technique that measures the volume changes in arterial blood. Recent studies have reported limitations in developing and optimising PPG-based sensing technologies due to unavailability of the ...
Anatomy, Bashkatov, Budidha, Gosling, Jacques, Lapeyre, Marks, Moyle, Panayiotis Kyriacou, Rushambwa, Subhasri Chatterjee, Tuchin, Tuchin, Webster   +13 more
core   +1 more source

Greater N-Acetylaspartate to creatine ratio within left anterior insula predicts sympathetic imbalance in postmenopausal women living with hypertension and/or HIV

Heart and Mind, 2017
Context: Brain metabolite ratios derived from magnetic resonance spectroscopy (MRS) has been used to document changes in neuronal viability, glial activation and inflammation associated with Human Immunodeficiency Virus (HIV) infection and cardiovascular
Roger C McIntosh, Judith D Lobo, Olumide Fajolu, Elizabet Reyes, Pradip M Pattany, Michael A Kolber   +5 more
doaj   +1 more source

Deep Learning in Cardiology

, 2021
The medical field is creating large amount of data that physicians are unable to decipher and use efficiently. Moreover, rule-based expert systems are inefficient in solving complicated medical tasks or for creating insights using big data. Deep learning
Bizopoulos, Paschalis, Koutsouris, Dimitrios   +1 more
core   +1 more source

Data Fusion for Improved Respiration Rate Estimation [PDF]

, 2010
We present an application of a modified Kalman-Filter (KF) framework for data fusion to the estimation of respiratory rate from multiple physiological sources which is robust to background noise.
Atul Malhotra, GariD Clifford, Shamim Nemati   +2 more
core   +1 more source

Relation between tag position and degree of visualized cerebrospinal fluid reflux into the lateral ventricles in time-spatial labeling inversion pulse magnetic resonance imaging at the foramen of Monro [PDF]

, 2015
BACKGROUND: Time-spatial labeling inversion pulse (Time-SLIP) magnetic resonance imaging allows non-invasive visualization of cerebrospinal fluid (CSF) movement. Our study evaluated the sensitivity of the Time-SLIP tag placement on the measurement of CSF
Alissa Old Crow, Erik H Middlebrooks, Jeffrey A Bennett   +2 more
core   +1 more source

Motion limitations of non-contact photoplethysmography due to the optical and topological properties of skin [PDF]

, 2016
Non-contact photoplethysmography (PPG) provides multiple benefits over in-contact methods, but is not as tolerant to motion due to the lack of mechanical coupling between the subject and sensor.
Alametsä J, Allen J, B R Hayes-Gill, Grubb M R, Hertzman A B, Humphreys K G, J A Crowe, M J Butler, P I Rodmell, PCO, Ratan V   +10 more
core   +3 more sources

The 2023 wearable photoplethysmography roadmap [PDF]

, 2023
Photoplethysmography is a key sensing technology which is used in wearable devices such as smartwatches and fitness trackers. Currently, photoplethysmography sensors are used to monitor physiological parameters including heart rate and heart rhythm, and ...
Allen, John, Bailon, Raquel, Baker, Stephanie, Behar, Joachim A., Charlton, Peter H., Chen, Fei, Clifford, Gari D., Clifton, David A., Davies, Harry J., Ding, Cheng, Ding, Xiaorong, Dunn, Jessilyn, Elgendi, Mohamed, Ferdoushi, Munia, Franklin, Daniel, Gil, Eduardo, Hassan, Md Farhad, Hernesniemi, Jussi, Hu, Xiao, Ji, Nan, Khan, Yasser, Kontaxis, Spyridon, Korhonen, Ilkka, Kyriacou, Panayiotis A., Laguna, Pablo, Lazaro, Jesus, Lee, Chungkeun, Levy, Jeremy, Li, Yumin, Liu, Chengyu, Liu, Jing, Lu, Lei, Mandic, Danilo P., Marozas, Vaidotas, Mejia-Mejia, Elisa, Mukkamala, Ramakrishna, Nitzan, Meir, Pereira, Tania, Poon, Carmen C. Y., Ramella-Roman, Jessica C., Saarinen, Harri, Shandhi, Md Mobashir Hasan, Shin, Hangsik, Stansby, Gerard, Tamura, Toshiyo, Vehkaoja, Antti, Wang, Will Ke, Zhang, Yuan-Ting, Zhao, Ni, Zheng, Dingchang, Zhu, Tingting   +50 more
core   +5 more sources

Determination of Oxygen Saturation and Photoplethysmogram from Near Infrared Scattering Images

, 2016
The near infrared scattering images of human muscle include some information on bloodstream and hemoglobin concentration according to skin depth and time. This paper addressed a method of determining oxygen saturation and photoplethysmogram from the near infrared (NIR) scattering images of muscle.
Ri, Yong-U, Pyon, Young-Hui, Sin, Kye-Ryong   +2 more
openaire   +2 more sources

Stress detection using wearable physiological and sociometric sensors [PDF]

, 2016
Stress remains a significant social problem for individuals in modern societies. This paper presents a machine learning approach for the automatic detection of stress of people in a social situation by combining two sensor systems that capture ...
Acharya U. R., Beck A., Bishop C. M., Cox T., David Ellis, Dedovic K., Jose Manuel Ferrandez, Kirschbaum C., Nicola Bellotto, Olguin-Olguin D., Oscar Martinez Mozos, Pentland A., Peper E., Perkins A., Radu Dobrescu, Sally Andrews, Spielberger C. D., Sung M., Viola P., Virginia Sandulescu, World Health Organization   +20 more
core   +3 more sources

Wearable technology: role in respiratory health and disease [PDF]

, 2017
In the future, diagnostic devices will be able to monitor a patient's physiological or biochemical parameters continuously, under natural physiological conditions and in any environment through wearable biomedical sensors. Together with apps that capture
Aliverti, Andrea
core   +1 more source