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Multimodality Monitoring in Neurocritical Care
2007
Critical care clinics
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These disadvantages and inconsistent impact of monitoring of decreased oxygenation on neurologic outcome [99] [100] [101] have restricted the use of near infrared spectroscopy for adults in the NICU. ...
technique using noninvasive near-infrared spectroscopy [26] , and the thermodilution method. ...
doi:10.1016/j.ccc.2007.06.002
pmid:17900483
fatcat:poac3krpm5bffbmz2y6xbdibo4
Quantitative assessment of global cerebral metabolic rate of oxygen (CMRO2) in neonates using MRI
2014
NMR in Biomedicine
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Although this method provides a global CMRO 2 measure only, the clinical significance of an energy consumption marker and the convenience of this technique may make it a useful tool in functional assessment ...
Cerebral metabolic rate of oxygen (CMRO 2 ) is the rate of oxygen consumption by the brain and is thought to be a direct index of energy homeostasis and brain health. ...
The authors are grateful to Jared Mosher for assistance with the MRI experiments and to the nurses of the transporting team in Division of Perinatal-Neonatal Medicine in Parkland Memorial Hospital. ...
doi:10.1002/nbm.3067
pmid:24399806
pmcid:PMC3970939
fatcat:wjttsie3ejchhgpqeqs3hewnda
Brain oxygen saturation assessment in neonates using T2-prepared blood imaging of oxygen saturation and near-infrared spectroscopy
2016
Journal of Cerebral Blood Flow and Metabolism
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Although near-infrared spectroscopy is increasingly being used to monitor cerebral oxygenation in neonates, it has a limited penetration depth. ...
Strong correlations between the various methods work as a cross validation for near-infrared spectroscopy and T 2 -prepared blood imaging of oxygen saturation, confirming the validity of using of these ...
[1] [2] [3] [4] [5] [6] Near-infrared spectroscopy (NIRS) is increasingly being used on the neonatal intensive care unit (NICU) to monitor the balance between the oxygen supply and oxygen consumption ...
doi:10.1177/0271678x16647737
pmid:27151900
pmcid:PMC5363470
fatcat:7yta2wpafzgi7ir4ka6ntm5ke4
Quality control and assurance in functional near infrared spectroscopy (fNIRS) experimentation
2010
Physics in Medicine and Biology
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Functional near infrared spectroscopy (fNIRS) is a rapidly developing neuroimaging modality for exploring cortical brain behaviour. ...
In order to address these issues and facilitate the quality control process, a taxonomy of factors influencing fNIRS data have been established. ...
of Pediatrics 154 S19-S21 Elwell C E, Cope M, Edwards A D, Wyatt J S, Delpy D T and Reynolds E O R 1994 Quantification of adult cerebral hemodynaics by near-infrared spectroscopy Journal of Applied Physiology ...
doi:10.1088/0031-9155/55/13/009
pmid:20530852
fatcat:ljy3gecy4fb2zkxqrsfzhvstpa
Multimodal Neuromonitoring: Current Scenario in Neurocritical Care
2019
Journal of Neuroanaesthesiology and Critical Care
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Simultaneous assessment of cerebral hemodynamics, oxygenation, and metabolism allows individualized patient care. ...
There exists a range of invasive/noninvasive and global/regional monitors of cerebral hemodynamics, oxygenation, metabolism, and electrophysiology that can be used to guide treatment decisions after neurological ...
Near-Infrared Spectroscopy Near-infrared spectroscopy (NIRS) is a noninvasive technique used for observing real-time changes in regional cerebral oxygenation at the bedside. 56 The physical principle ...
doi:10.1055/s-0039-1692863
fatcat:hhfumb3ofza7ne7gedhi5e6bli
Age-correlated changes in cerebral hemodynamics assessed by near-infrared spectroscopy
2004
Archives of gerontology and geriatrics (Print)
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Near-infrared spectroscopy (NIRS) is widely used for monitoring cerebral hemodynamics and oxygenation changes at the level of small vessels. ...
Thirty seven healthy volunteers, 12 females and 25 males, ranging from 22 to 56 years of age (mean age 35 ± 11 years) participated in the study. ...
Acknowledgements This research was supported by the following National Institutes of Health (NIH) grant: SBIR NS 40597-01, CA 57032, RR 10966. ...
doi:10.1016/j.archger.2004.03.007
pmid:15381340
fatcat:pl5vo4qlkfgnpjxbmy6g5vvkiy
The Use of Near-Infrared Spectroscopy in the Sport-Scientific Context
2018
Journal of Neurology and Neurological Disorders
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The focus of this research is aimed specifically at the application of near-infrared spectroscopy (NIRS) in exercise and sport science. ...
This review article highlights recent studies related to the in vivo assessment of both cerebral and skeletal muscle tissue in the elite sport context using NIRS technology. ...
abbreviations: NIRS: Near-Infrared Spectroscopy; CW NIRS: Continuous-Wave Near-Infrared Spectroscopy; SRS NIRS: Spatially Resolved Spectroscopy; TD NIRS: Time-Domain Near-Infrared Spectroscopy; FD NIRS ...
doi:10.15744/2454-4981.4.203
fatcat:o4zfw6zjwbcktl2tunmvrl7lru
Functional Magnetic Resonance Imaging and Functional Near-Infrared Spectroscopy: Insights from Combined Recording Studies
2017
Frontiers in Human Neuroscience
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More recently, functional near infrared spectroscopy (fNIRS) has emerged as an alternative hemodynamic-based approach that possesses a number of strengths where fMRI is limited, most notably in portability ...
studies; and (3) discuss how their combined use in future research practices may aid in advancing modern investigations of human brain function. ...
Functional Near-Infrared Spectroscopy One technology that shows increasing promise as an independent functional neuroimaging method and for use in conjunction with MRI and fMRI is known as fNIRS. ...
doi:10.3389/fnhum.2017.00419
pmid:28867998
pmcid:PMC5563305
fatcat:w4ojzrqr5fastgrfgjnwl2py5y
Cerebral oxygen extraction fraction MRI: techniques and applications
[article]
2022
arXiv
pre-print
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Therefore, OEF is a key physiological parameter of the brain's function and metabolism. OEF has been suggested to be a useful biomarker in a number of brain diseases. ...
These MRI OEF techniques are based on T2 of blood, phase of blood signal, susceptibility of blood-containing voxel, effect of deoxyhemoglobin on signal behavior in extravascular tissue, and calibration ...
, such as 15 O-PET 205 and near-infrared spectroscopy [206] [207] [208] in human subjects. ...
arXiv:2202.01350v1
fatcat:hefhe7f5hbabzjtm4pmudscdpy
The Role of Cerebrovascular-Reactivity Mapping in Functional MRI: Calibrated fMRI and Resting-State fMRI
2021
Frontiers in Physiology
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This review addresses all of these aspects in which CVR interacts with fMRI and the role of CVR in calibrated fMRI, provides an overview of the physiological biases and assumptions underlying hypercapnia-based ...
In particular, CVR estimation is part of a family of techniques called calibrated BOLD fMRI, the purpose of which is to allow the mapping of cerebral oxidative metabolism (CMRO2) using a combination of ...
FUNDING The writing of this review was supported by the Canadian Institutes of Health Research (CIHR), the Heart and Stroke Foundation, and the Michal and Renata Hornstein Chair in Cardiovascular Imaging ...
doi:10.3389/fphys.2021.657362
pmid:33841190
pmcid:PMC8027080
fatcat:rr7riv4advfitaovxhhgojyu2m
Poster Viewing Session III
2017
Journal of Cerebral Blood Flow and Metabolism
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The aim was to test this hypothesis using broadband near-infrared spectroscopy (NIRS) to monitor changes in brain vascular oxygenation (HbD ¼ oxyhaemoglobin (HbO 2 )-deoxyhaemoglobin (HHb)) and brain tissue ...
We partnered with CCHU to test whether our novel technology, which combines frequencydomain near-infrared spectroscopy (FDNIRS) and diffuse correlation spectroscopy (DCS) to quantify regional cerebral ...
Acknowledgement: This research has been funded by Acknowledgements: T.Hollyer is grateful the financial and technical support for this project from SINAPSE, ReNeuron, and The University of Glasgow ...
doi:10.1177/0271678x17695987
pmid:28366135
pmcid:PMC5441165
fatcat:m4mfdovmpzasbh5brx26kp4ho4
Cerebral blood volume and oxygen supply uniformly increase following various intrathoracic pressure strains
2017
Scientific Reports
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Using frequency-domain near-infrared spectroscopy and echocardiography, we measured changes in cerebral, muscular and cardiac hemodynamics in five graded respiratory maneuvers (RM), breath holding, moderate ...
The responses of cerebral hemodynamics to different ITP swings are still less well-known due to the complexity of cerebral circulation and methodological limitation. ...
Acknowledgements This work was supported by Clinic Barmelweid Scientific Foundation and ResMed foundation. ...
doi:10.1038/s41598-017-08698-0
pmid:28827669
pmcid:PMC5566207
fatcat:shr6ne24gnaxlizaifsal6ovqm
Basic Principles and Concepts Underlying Recent Advances in Magnetic Resonance Imaging of the Developing Brain
2010
Seminars in Perinatology
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These techniques provide quantitative assessment and novel insight of both brain development and brain injury in the immature brain. ...
Knowledge of normal developmental changes in quantitative MR values is also essential to interpret pathologic cases. ...
Acknowledgments The authors thank Hari Keshava and Arabhi Nagasunder (quantitative diffusion tensor measurements); Marvin D. ...
doi:10.1053/j.semperi.2009.10.001
pmid:20109968
pmcid:PMC2887750
fatcat:72csqanjhva3lpgbvfv52z65qe
High Temporal Resolution MRI Quantification of Global Cerebral Metabolic Rate of Oxygen Consumption in Response to Apneic Challenge
2013
Journal of Cerebral Blood Flow and Metabolism
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The technique was then applied in 10 healthy adults during an apnea paradigm of three repeated 30-second breath-holds. ...
We present a technique for quantifying global cerebral metabolic rate of oxygen consumption (CMRO 2 ) in absolute physiologic units at 3-second temporal resolution and apply the technique to quantify the ...
Such information is critical given the use of CO 2 and O 2 in calibrating BOLD fMRI, as there is growing interest in making BOLD fMRI more quantitative through respiratory calibration. ...
doi:10.1038/jcbfm.2013.110
pmid:23838827
pmcid:PMC3790925
fatcat:blyp5po5czcvpkizmj5z7fiiae
MRI-Driven PET Image Optimization for Neurological Applications
2019
Frontiers in Neuroscience
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Regarding the PVE associated with limited spatial resolution, the process and reconstruction of PET data can be further optimized by using acquired MRI either sequentially or simultaneously. ...
The most unique superiority of PET/MRI is mainly manifested in MRI-based improvement for the inherent limitations of PET, such as motion artifacts, partial volume effect (PVE) and invasive procedure in ...
FUNDING This work was supported by grants from the National Natural Science Foundation of China (NSFC) (Nos. 81801729, 81671718, and 81873903). ...
doi:10.3389/fnins.2019.00782
pmid:31417346
pmcid:PMC6684790
fatcat:cvs6ok7qjrbxhgavgjezzwac5m
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