Results 21 to 30 of about 1,117 (156)

A Generalized Approach to Solving Deep Learning‐Based Quantitative Susceptibility Mapping and Quantitative Blood Oxygen Level Dependent Magnitude (QSM + qBOLD or QQ) for Oxygen Extraction Fraction (OEF) Mapping Across Diverse Acquisition Schemes

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose QQ, a recently proposed oxygen extraction fraction (OEF) mapping technique combining quantitative susceptibility mapping (QSM) and quantitative blood oxygen level‐dependent (qBOLD) (QSM + qBOLD = QQ), generates OEF maps noninvasively from a single routine MRI sequence, without requiring vascular challenges used in other OEF approaches.
Tian Qiu, Ada Ally, Arpita Misra, Gloria C. Chiang, Thanh D. Nguyen, Susan A. Gauthier, Shun Zhang, Yi Wang, Junghun Cho   +8 more
wiley   +1 more source

Non‐Invasive Triage of Bladder Outlet Obstruction and Detrusor Underactivity in Men With Lower Urinary Tract Symptoms: A Narrative Review and Conceptual Framework for Depth‐Aware Multimodal Transcutaneous Testing

Neurourology and Urodynamics, EarlyView.
ABSTRACT Introduction Differentiating bladder outlet obstruction (BOO) from detrusor underactivity (DU) remains a major unmet need in the management of lower urinary tract symptoms in men. Although pressure–flow urodynamics provide a definitive physiological classification, their invasiveness limits their widespread use.
Sehwan Kim, Bryan K. Kim, John T. Stoffel, Aram Kim   +3 more
wiley   +1 more source

Reaction of Oxyhemoglobin with Carbon Monoxide

Biophysical Journal, 1963
The reaction of oxyhemoglobin and carbon monoxide was studied kinetically at pH 7.8 in a variety of suspending media. The dielectric constant of the suspending media, as well as the viscosity (and hence the Fick diffusion coefficients), was varied with the use of glycine, glycerol, and sucrose.
Ackerman, Eugene, Berger, Robert L.
openaire   +2 more sources

Effects of transcranial direct current stimulation on pain and function in patients with knee osteoarthritis: A systematic review and meta‐analysis

PM&R, EarlyView.
Abstract Objective The aim of this systematic review and meta‐analysis is to determine the effects of transcranial direct current stimulation (TDCS) on pain (considering the different types of pain measured) and function in adults with knee osteoarthritis (OA).
Noemí Moreno‐Segura, Sara Mollà‐Casanova, Elena Muñoz‐Gómez, Marta Inglés, Pilar Serra‐Añó   +4 more
wiley   +1 more source

Study on Classification and Detection of Operational Fatigue in Deep‐Well Mining Truck Drivers Based on GSWOA‐LSSVM

Safety Science and Technology, EarlyView.
ABSTRACT Effectively detecting the operational fatigue of miners can identify safety risks in mines. As the executors of auxiliary transportation in mines, the operational fatigue status of mining truck drivers deserves particular attention and detection.
Ying Chen, Jikun Lu, Caiwu Lu, Qinghua Gu, Song Jiang   +4 more
wiley   +1 more source

The effect of rhegmatogenous retinal detachment on retinal oxygenation

Acta Ophthalmologica, EarlyView.
Abstract Purpose Little is known about the effects of retinal detachment on oxygen extraction from retinal vessels. The role of oxygen supply from the retinal vessels in a detached area has not previously been investigated in vivo in humans. Retinal oximetry is a non‐invasive measurement of retinal oxygen saturation.
Anne‐Sofie Petri, Sindri Traustason, Sveinn H. Hardarson, Alexander Kyhnel, Einar Stefansson, Jens F. Kiilgaard, Morten la Cour, Javad Nouri Hajari, Therese Krarup   +8 more
wiley   +1 more source

Methaemoglobinaemia: From pathophysiology to contemporary clinical management

British Journal of Haematology, EarlyView.
Summary Methaemoglobin (MetHb) is an oxidised form of haemoglobin (Hb) unable to bind oxygen. Raised levels of MetHb reduce the blood's oxygen‐carrying capacity, causing potentially severe hypoxaemia and possible death. The condition arises from three main pathologies: mutations in globin genes causing Haemoglobin‐M, inherited deficiency of the enzyme ...
Alexander J. Twine, David C. Rees
wiley   +1 more source

Absorption spectra of human fetal and adult oxyhemoglobin, de-oxyhemoglobin, carboxyhemoglobin, and methemoglobin

Clinical Chemistry, 1991
Abstract We determined the millimolar absorptivities of the four clinically relevant derivatives of fetal and adult human hemoglobin in the visible and near-infrared spectral range (450-1000 nm). As expected, spectral absorption curves of similar shape were found, but the small differences between fetal and adult hemoglobin absorptivity ...
Zijlstra, W.G., Buursma, A., Meeuwsen-van der Roest, W.P.   +2 more
openaire   +2 more sources

A Multimodal Machine Learning Model for Framingham Risk Score–Based Cardiovascular Risk Stratification in Patients With Obstructive Sleep Apnea

Journal of Sleep Research, EarlyView.
ABSTRACT Machine learning provides a powerful tool to capture complex, nonlinear patterns in biomedical data and enhance precision risk stratification. In this study, we applied a multilayer perceptron (MLP) framework to classify Framingham Risk Score–based cardiovascular risk categories in patients with obstructive sleep apnea (OSA).
Feng Zhao, Yin Li, Chenyang Li, Huajun Xu, Enhui Zhou, Weijun Huang, Huaming Zhu, Jian Guan, Hongliang Yi, Jianyin Zou, Nutan Chen   +10 more
wiley   +1 more source

Does Hypoxic Burden Better Explain Sex Differences in Functional Impairments Than Apnoea‐Hypopnoea Index in Obstructive Sleep Apnoea?

Journal of Sleep Research, EarlyView.
ABSTRACT Women with obstructive sleep apnoea (OSA) report more severe functional impairments than men, despite lower apnoea‐hypopnoea index (AHI) values. This raises questions about the adequacy of AHI for capturing OSA severity. We explored sex differences in functional outcomes in OSA patients and examined whether AHI or hypoxic burden (HB) better ...
Urvashi Nanda, Yu Sun Bin, Philip de Chazal, Andrew S. L. Chan, Amanda Piper, Kristina Kairaitis, Peter A. Cistulli, Brendon J. Yee, on behalf of the Sydney Sleep Biobank Investigators, Peter Cistulli, Philip de Chazal, Yu Sun Bin, Lu Fu, Benjamin Tong, Glenn Stewart, Gary Cohen, Andrew S. L. Chan, Anna Mohammadieh, John Wheatley, Kristina Kairaitis, Stephen Lambert, Tracey Burns, Brendon Yee, Amanda Piper, Kerri Melehan, Amy Jackson, Gislaine Gauthier   +26 more
wiley   +1 more source