Results 41 to 50 of about 9,818 (189)

Quantitative Susceptibility Mapping in Skull Base Chordoma: In Silico Analysis and In Vivo Application Towards Indirect Hypoxia Assessment

Magnetic Resonance in Medicine, Volume 95, Issue 4, Page 2092-2105, April 2026.
ABSTRACT Purpose To evaluate quantitative susceptibility mapping (QSM) beyond the brain through realistic simulations and to explore preliminary evidence that may be indicative of hypoxia in skull base chordomas (SBC). Methods Each step of the QSM pipeline was optimized within an in silico framework consisting of (i) phase unwrapping, (ii) background ...
P. Fenech, L. Morelli, G. Parrella, S. Imparato, A. Iannalfi, S. Lillo, E. Orlandi, G. Baroni, C. Paganelli   +8 more
wiley   +1 more source

Cerebral and Peripheral Hemodynamics Across Wakefulness and NREM Sleep

Journal of Sleep Research, Volume 35, Issue 2, April 2026.
ABSTRACT Wake/sleep‐related changes in cerebral hemodynamic oscillations are well established, but similar changes in peripheral hemodynamics remain largely understudied. Moreover, how the relationship between cerebral and peripheral hemodynamics varies across sleep–wake states is not well understood, despite evidence that these oscillations in the low‐
Vidhya V. Nair, Brianna R. Kish, Hideyuki Oshima, Qiuting Wen, Yunjie Tong, A. J. Schwichtenberg   +5 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

Real‐Time High‐Definition Hyperspectral Endoscopy via Spatial‐Temporal Low‐Frequency‐Stochastic Spectral Encoding

Advanced Science, Volume 13, Issue 16, 18 March 2026.
A real‐time, high‐definition hyperspectral endoscopy is enabled by developing a spatial‐temporal spectral encoding approach based on low‐frequency stochastic filters combined with an encoding‐guided attention network. It provides hyperspectral image of in vivo tissue with fine superficial features, enables visualization of rapid and subtle ...
Xiaowei Liu, Jiakang Shao, Julin Xiao, Chenying Yang, Jiahe Zhang, Xiaoyu Yang, Xiang Hao, Ying Gu, Xu Liu, Yizhou Tan, Ji Qi, Qing Yang   +11 more
wiley   +1 more source

Management of Acquired Nasopharyngeal Stenosis in Pediatric Patients: A Case Report

Clinical Case Reports, Volume 14, Issue 3, March 2026.
ABSTRACT Acquired nasopharyngeal stenosis is a rare condition in pediatric patients. This report describes the case of a 10‐year‐old girl who developed nasopharyngeal stenosis following cleft palate surgery, presenting with bilateral nasal obstruction, chronic mouth breathing, and snoring.
Yan Li, Liming Li, Xin Wang, Qing Yuan, Qingfeng Zhang, Qiang Wu   +5 more
wiley   +1 more source

Dynamic Reconfiguration of Cognitive Networks and Recovery From Microlesion Effects in Parkinson's Disease: Insights From a Longitudinal fNIRS Study

CNS Neuroscience &Therapeutics, Volume 32, Issue 3, March 2026.
This longitudinal fNIRS study reveals that STN‐DBS induces a dynamic “suppression‐reorganization” of prefrontal‐temporal cognitive networks in Parkinson's patients. Cortical activation decreased during the microlesion period but rebounded beyond baseline after stimulation, with graph theory confirming reorganization independent of motor networks. fNIRS
Xiang Wei, Yuting Tian, Qiutian Lu, Jingxuan Liu, Guanghan Lu, Jian Sun, Bei Luo, Liang Zhao, Chang Qiu, Wenwen Dong, Wenbin Zhang   +10 more
wiley   +1 more source

The physiology of survival: Breath‐hold shallow‐water diving

Experimental Physiology, EarlyView.
Andrew H. Baker, Ashley Jones, Adrian Mayhew, Carlene McAvoy, Ross Macleod, Hugh Montgomery, Craig Robertson, Jo Talbot, Mike Tipton   +8 more
wiley   +1 more source

The Effect of Blood Flow Restriction Training on Rock Climbing Performance, Forearm Blood Oxygenation and Cardiovascular Responses

European Journal of Sport Science, Volume 26, Issue 3, March 2026.
ABSTRACT Blood flow restriction (BFR) training elicits cardiovascular and muscular adaptations across exercise modalities, but its potential to enhance performance in sport‐specific tasks such as climbing remains unclear. This investigation focused on sport climbing, examining the effects of incorporating BFR training on performance and hemodynamic ...
Ben J. Mckellar, Jamie F. Burr
wiley   +1 more source

The Regulation of Vasomotor and Cardiorespiratory Pulsations Is Disrupted in Primary Central Nervous System Lymphoma: A Case–Control fMRI Study

Human Brain Mapping, Volume 47, Issue 4, March 2026.
Using fast functional MRI, we assessed low‐frequency oscillations arising from cardiorespiratory pulsations and oscillatory interaction between respiratory and cardiac pulsations in primary central nervous system lymphoma. Respiratory‐related oscillations showed brain‐wide increases with a link to mortality whereas increases in cardiovascular‐related ...
Valter Poltojainen, Matti Järvelä, Nina Keinänen, Michaela K. Bode, Juha‐Matti Isokangas, Hanne Kuitunen, Juha Nikkinen, Vesa Korhonen, Niko Huotari, Lauri Raitamaa, Janne Kananen, Heta Helakari, Tommi Kalevi Korhonen, Sami Tetri, Outi Kuittinen, Vesa Kiviniemi   +15 more
wiley   +1 more source

Improved Sensitivity in Large Field of View Multispectral Laser‐Scanning Photoacoustic Microscopy for Measuring Oxygen Saturation In Vivo

Journal of Biophotonics, Volume 19, Issue 3, March 2026.
Validation of large field of view multispectral laser‐scanning photoacoustic microscopy (LS‐MS‐PAM) for sO2 measurements. ABSTRACT Multispectral photoacoustic microscopy (PAM) using stimulated Raman scattering (SRS) has been employed to measure oxygen saturation (sO2) in biological tissue.
Mohsin Zafar, Amir Khansari, Rayyan Manwar, Kamran Avanaki   +3 more
wiley   +1 more source